chore: migrate to fs/promises

[develar]

Avoid deprecation errors about using "rmdir".

[mmaietta]

Hmmmm, a different 'targets' test is now failing and it isn't generating most of the expected artifacts

Snapshot name: `targets 1`

- Snapshot  - 16
+ Received  +  0

  Object {
    "linux": Array [
      Object {
        "arch": "x64",
-       "file": "TestApp-1.1.0.7z",
-     },
-     Object {
-       "arch": "x64",
-       "file": "TestApp-1.1.0.freebsd",
-     },
-     Object {
-       "arch": "x64",
        "file": "TestApp-1.1.0.pacman",
-     },
-     Object {
-       "arch": "x64",
-       "file": "TestApp-1.1.0.sh",
-     },
-     Object {
-       "arch": "x64",
-       "file": "TestApp-1.1.0.zip",
      },
    ],
  }
    at packAndCheck (/root/project/test/src/helpers/packTester.ts:244:27)

[kapalex]

Just letting you know this causes an issue with builds for node 13.x envionments (throw exception of cannot find module 'fs/promises')
For me I ran into this when trying to build on windows 7 where node 14 is not supported.

[bromix]

Same here with Node 12.x

> PROJECTNAME postinstall C:\Development\ashampoo\connect\connect-launcher
> electron-builder install-app-deps

Error: Cannot find module 'fs/promises'

Now we are not able to create a production build for our new release :(

[Yongle-Fu]

Same here with Node 12.x

> PROJECTNAME postinstall C:\Development\ashampoo\connect\connect-launcher
> electron-builder install-app-deps

Error: Cannot find module 'fs/promises'

Now we are not able to create a production build for our new release :(

Same here with Node 12.x, fallback to 22.10.5 will be ok
#5953

[alectrocute]

This broke our CI builds today on Node 12.x.

[nuochong]

me too