Bump @actions/github from 7.0.0 to 9.0.0 (#1210)

* Bump @actions/github from 7.0.0 to 9.0.0

Bumps [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github) from 7.0.0 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: "@actions/github"
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* Fix breaking changes for @actions/github v9 upgrade

- Update tsconfig.json: target to es2022, module to esnext, moduleResolution to bundler
  Required for @octokit/core v7 package exports compatibility
- Update Context import in actionService.ts to use type alias from exported context
- Update test to use mock context factory instead of new Context()
- Add required fields to payload.repository in tests per new type requirements

Co-Authored-By: Mikkel Sander Guntveit <mikkel.guntveit@visma.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: ecoai-bot <ecoai-bot@e-conomic.com>
Co-authored-by: Mikkel Sander Guntveit <mikkel.guntveit@visma.com>

Author: 3 people