build(deps): bump @octokit/request and @actions/github (#383)

Bumps [@octokit/request](https://github.com/octokit/request.js) to 8.4.1 and updates ancestor dependency [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github). 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](https://github.com/octokit/request.js/compare/v5.6.3...v8.4.1)

Updates `@actions/github` from 5.1.1 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)

---
updated-dependencies:
- dependency-name: "@octokit/request"
  dependency-type: indirect
- dependency-name: "@actions/github"
  dependency-type: direct:production
...

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