[BUG]: data_source_github_app_token.go wrong baseURL for self-hosted Github Entreprise

### Expected Behavior

When using the `github_app_token ` data source : 

I expect to get a GitHub token from my Github_app to use. 

### Actual Behavior

It fails with the following error 

```
│ Error: failed to create OAuth token from GitHub App: {"message":"Bad credentials","documentation_url":"https://docs.github.com/enterprise-server@3.11/rest"}
│
│   with data.github_app_token.token,
│   on main.tf line 52, in data "github_app_token" "token":
│   52: data "github_app_token" "token" {
│
```


### Terraform Version

Terraform v1.9.8
on darwin_arm64
+ provider registry.terraform.io/integrations/github v6.6.0


### Affected Resource(s)

- data github_app_token

### Terraform Configuration Files

```hcl
provider "github" {
  base_url = "https://github-eu.custom.entreprise.cloud/"
  owner    = "my-org"
}


data "github_app_token" "token" {
  app_id          = 13
  installation_id = 20
  pem_file        = file("./my-gh-app-name.2025-04-03.private-key.pem")
}
```

### Steps to Reproduce

```
TF_LOG_PROVIDER=DEBUG GODEBUG=http2debug=1 TF_LOG_PATH=terraform.log terraform plan
```

You'll get the error mentioned before. 

Then in the `terraform.log` file search for  `app/installations` and you will see that the `path` to the api have two times the `/api/v3`  prefix

### Debug Output

```shell
2025-04-09T16:01:53.954+0200 [DEBUG] provider.terraform-provider-alicloud_v1.247.0: 2025/04/09 16:01:53 using terraform version: 1.9.8
2025-04-09T16:01:53.954+0200 [DEBUG] provider.terraform-provider-alicloud_v1.247.0: 2025/04/09 16:01:53 alicloud provider trace id: f6ed6978-23a8-4c82-869c-32fc2eb1c13c
2025-04-09T16:01:53.955+0200 [DEBUG] provider.terraform-provider-alicloud_v1.247.0: 2025/04/09 16:01:53 [DEBUG] Waiting for state to become: [success]
2025-04-09T16:01:54.007+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport received HEADERS flags=END_HEADERS stream=3 len=733: timestamp="2025-04-09T16:01:54.007+0200"
2025-04-09T16:01:54.007+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport received DATA stream=3 len=674 data="\x1f\x8b\b\x00\x00\x00\x00\x00\x00\x03\xb5UMs\xda0\x14\xfc+\x19\x9fC\f\xb4\x90\xe0\x99L\x0fM\xdaC\xa7M\x0f=tr\xd1<\xdb\xcfFA\x96\\I\x86\xa1\x99\xfc\xf7\xae-\x03\xa6\x1fI\x0e\x94\x93,=\xef>\xef\xdb\x15\x8f\x912\xa5\xd4Q\x12\xad\xd8J]\x8er\xf24\xaa\x15\xf9\xc2\xd8j\x94-\xa5\xa6\xe8<\x92y\x94L\xe6\x97\xe7\x9169\x8b\xf6)\xfa|s\xbb\xbd[-\xb6\xf7\xd3\x0f\r}\xaf\x97\xf9G\xb5N\x1fn\xa7_6\xd7\xd7x\xa3\xb1\nEK\xefk\x97\xc4q)\xfd\xb2IG\x99\xbe\b4\x17\x992M\x1eS-\xe3\xf5\x9b\xd8\xd8\xd2\xc5\xcf\xf2[\xae\x8d\x13'Č;D\xf4\xc9k\xd6\xfe\xb4\xd0\x01\x12\xd8KcV\xa7\x85\xee\x10\xdby8\xd7\xf0i\xa1\x03$\xb0+\xaeR\xb6\xa7\x05\xef1\x1f\xe3\xb0x\x02MݤJf\xe2\x7f\xb0\x1dC\x0fIi\r{\xdbW\x1a\xa9\xabuq\x13\xc3\xf9\xef\xd0q\xce.\xb3\xb2\xf6Ҵy\xc1" (418 bytes omitted): timestamp="2025-04-09T16:01:54.007+0200"
2025-04-09T16:01:54.007+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport received DATA flags=END_STREAM stream=3 len=0 data="": timestamp="2025-04-09T16:01:54.007+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":authority" = "github-eu.custom.entreprise.cloud": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":method" = "GET": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":path" = "/api/v3/apps/my-gh-app-name": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":scheme" = "https": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "accept" = "application/vnd.github.v3+json,application/vnd.github.stone-crop-preview+json": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "user-agent" = "go-github/v66.0.0": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "x-github-api-version" = "2022-11-28": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "authorization" = "Bearer ghs_XXXXXXXXXXXX": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.010+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "accept-encoding" = "gzip": timestamp="2025-04-09T16:01:54.010+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":authority" = "github-eu.custom.entreprise.cloud": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":method" = "POST": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":path" = "/api/v3/api/v3/app/installations/20/access_tokens": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":scheme" = "https": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "accept" = "application/vnd.github.v3+json": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "authorization" = "Bearer eyJhXXXXXXXXXXXXXX": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "content-length" = "0": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "accept-encoding" = "gzip": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "user-agent" = "Go-http-client/2.0": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":authority" = "github-eu.custom.entreprise.cloud": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":method" = "POST": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":path" = "/api/v3/api/v3/app/installations/20/access_tokens": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header ":scheme" = "https": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "accept" = "application/vnd.github.v3+json": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "authorization" = "Bearer eyJhXXXXXXXXXXXXXX": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "content-length" = "0": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "accept-encoding" = "gzip": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.012+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport encoding header "user-agent" = "Go-http-client/2.0": timestamp="2025-04-09T16:01:54.012+0200"
2025-04-09T16:01:54.054+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport received HEADERS flags=END_HEADERS stream=7 len=419: timestamp="2025-04-09T16:01:54.054+0200"
2025-04-09T16:01:54.054+0200 [INFO]  provider.terraform-provider-github_v6.6.0: 2025/04/09 16:01:54 http2: Transport received DATA flags=END_STREAM stream=7 len=110 data="\x1f\x8b\b\x00\x00\x00\x00\x00\x00\xff\r\xcaA\n\x80 \x10F\xe1\xabĬK\x89v\xad\xa2\x8b\x84\xe9\x8f\t\x9913\xb6\x89\xee\x9e\xcb\xc7\xfb^\xca\x10q\x114\xd3\xeaB\xe7\x19\x01\x97&w\n\xf5\x14\x8a\xaf\xb9\xa5\xd3T\xae\xad\xf2\xd9ԡz\xcblm{bbң\xeeƗl\x1b\x03ߜ\x04\x83\x80\x1f\xf02\x99q\xb4\fQ\xfa~\x9a\xebJ\xaag\x00\x00\x00": timestamp="2025-04-09T16:01:54.054+0200"
2025-04-09T16:01:54.055+0200 [ERROR] provider.terraform-provider-github_v6.6.0: Response contains error diagnostic: tf_data_source_type=github_app_token tf_proto_version=5.6 tf_provider_addr=provider tf_req_id=e4e540f2-fb67-c853-70f9-c74460099588 tf_rpc=ReadDataSource diagnostic_summary="failed to create OAuth token from GitHub App: {\"message\":\"Bad credentials\",\"documentation_url\":\"https://docs.github.com/enterprise-server@3.11/rest\"}" @module=sdk.proto diagnostic_detail="" diagnostic_severity=ERROR @caller=github.com/hashicorp/terraform-plugin-go@v0.23.0/tfprotov5/internal/diag/diagnostics.go:58 timestamp="2025-04-09T16:01:54.054+0200"
```

### Panic Output

```shell

```

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct

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[BUG]: data_source_github_app_token.go wrong baseURL for self-hosted Github Entreprise #2616

Expected Behavior

Actual Behavior

Terraform Version

Affected Resource(s)

Terraform Configuration Files

Steps to Reproduce

Debug Output

Panic Output

Code of Conduct

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[BUG]: data_source_github_app_token.go wrong baseURL for self-hosted Github Entreprise #2616

Description

Expected Behavior

Actual Behavior

Terraform Version

Affected Resource(s)

Terraform Configuration Files

Steps to Reproduce

Debug Output

Panic Output

Code of Conduct

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions