build(deps): bump undici and @actions/github

Bumps [undici](https://github.com/nodejs/undici) to 6.24.1 and updates ancestor dependency [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github). These dependencies need to be updated together.


Updates `undici` from 5.28.5 to 6.24.1
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.28.5...v6.24.1)

Updates `@actions/github` from 6.0.0 to 9.0.0
- [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: undici
  dependency-version: 6.24.1
  dependency-type: indirect
- dependency-name: "@actions/github"
  dependency-version: 9.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]