Bump @octokit/request and @octokit/rest in /webpack

Bumps [@octokit/request](https://github.com/octokit/request.js) to 9.2.1 and updates ancestor dependency [@octokit/rest](https://github.com/octokit/rest.js). These dependencies need to be updated together.


Updates `@octokit/request` from 5.6.3 to 9.2.1
- [Release notes](https://github.com/octokit/request.js/releases)
- [Commits](octokit/request.js@v5.6.3...v9.2.1)

Updates `@octokit/rest` from 18.12.0 to 21.1.0
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v18.12.0...v21.1.0)

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

Signed-off-by: dependabot[bot] <support@github.com>