Bump stefanzweifel/git-auto-commit-action from 4.14.1 to 4.15.0

Bumps [stefanzweifel/git-auto-commit-action](https://github.com/stefanzweifel/git-auto-commit-action) from 4.14.1 to 4.15.0.
- [Release notes](https://github.com/stefanzweifel/git-auto-commit-action/releases)
- [Changelog](https://github.com/stefanzweifel/git-auto-commit-action/blob/master/CHANGELOG.md)
- [Commits](stefanzweifel/git-auto-commit-action@v4.14.1...v4.15.0)

---
updated-dependencies:
- dependency-name: stefanzweifel/git-auto-commit-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/update-gradle-wrapper.yml

@@ -17,7 +17,7 @@ jobs:
           echo ::set-output name=latest_version::${latest}
           ./gradlew wrapper --gradle-version $latest
       - uses: gradle/[email protected]
-      - uses: stefanzweifel/git-auto-commit-action@v4.14.1
+      - uses: stefanzweifel/git-auto-commit-action@v4.15.0
         with:
           commit_message: Upgrade Gradle Wrapper to ${{ steps.update.outputs.latest_version }}
           commit_user_name: micronaut-build