chore(deps): bump cross-spawn, @actions/github and eslint

Bumps [cross-spawn](https://github.com/moxystudio/node-cross-spawn) to 7.0.5 and updates ancestor dependencies [cross-spawn](https://github.com/moxystudio/node-cross-spawn), [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github) and [eslint](https://github.com/eslint/eslint). These dependencies need to be updated together.


Updates `cross-spawn` from 6.0.5 to 7.0.5
- [Changelog](https://github.com/moxystudio/node-cross-spawn/blob/master/CHANGELOG.md)
- [Commits](moxystudio/node-cross-spawn@v6.0.5...v7.0.5)

Updates `@actions/github` from 2.1.1 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)

Updates `eslint` from 6.8.0 to 9.15.0
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v6.8.0...v9.15.0)

---
updated-dependencies:
- dependency-name: cross-spawn
  dependency-type: indirect
- dependency-name: "@actions/github"
  dependency-type: direct:production
- dependency-name: eslint
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>