Bump tibdex/github-app-token from 1 to 2

Bumps [tibdex/github-app-token](https://github.com/tibdex/github-app-token) from 1 to 2.
- [Release notes](https://github.com/tibdex/github-app-token/releases)
- [Commits](tibdex/github-app-token@v1...v2)

---
updated-dependencies:
- dependency-name: tibdex/github-app-token
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/changelog.yml

@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository_owner == 'jenkinsci'
     steps:
-      - uses: tibdex/github-app-token@v1
+      - uses: tibdex/github-app-token@v2
         id: generate-token
         with:
           app_id: ${{ secrets.JENKINS_CHANGELOG_UPDATER_APP_ID }}