Bump @octokit/request, @actions/github and @octokit/rest (#34545)

Bumps [@octokit/request](https://github.com/octokit/request.js) to 8.4.1 and updates ancestor dependencies [@octokit/request](https://github.com/octokit/request.js), [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github) and [@octokit/rest](https://github.com/octokit/rest.js). These dependencies need to be updated together.


Updates `@octokit/request` from 5.6.3 to 8.4.1
- [Release notes](https://github.com/octokit/request.js/releases)
- [Commits](octokit/request.js@v5.6.3...v8.4.1)

Updates `@actions/github` from 5.0.0 to 6.0.0
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/github/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/github)

Updates `@octokit/rest` from 18.12.0 to 21.1.1
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v18.12.0...v21.1.1)

---
updated-dependencies:
- dependency-name: "@octokit/request"
  dependency-version: 8.4.1
  dependency-type: indirect
- dependency-name: "@actions/github"
  dependency-version: 6.0.0
  dependency-type: direct:production
- dependency-name: "@octokit/rest"
  dependency-version: 21.1.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]