build(deps): bump @octokit/request, @actions/github, @octokit/rest and actions-toolkit

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), [@octokit/rest](https://github.com/octokit/rest.js) and [actions-toolkit](https://github.com/JasonEtco/actions-toolkit). These dependencies need to be updated together.


Updates `@octokit/request` from 5.4.7 to 8.4.1
- [Release notes](https://github.com/octokit/request.js/releases)
- [Commits](octokit/request.js@v5.4.7...v8.4.1)

Updates `@actions/github` from 4.0.0 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 16.43.2 to 21.1.1
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v16.43.2...v21.1.1)

Updates `actions-toolkit` from 2.2.0 to 6.0.1
- [Release notes](https://github.com/JasonEtco/actions-toolkit/releases)
- [Commits](JasonEtco/actions-toolkit@v2.2.0...v6.0.1)

---
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
- dependency-name: actions-toolkit
  dependency-version: 6.0.1
  dependency-type: direct:production
...

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Author: dependabot[bot]