Bump stefanzweifel/git-auto-commit-action from 4.14.1 to 4.15.0 (cookiecutter#3880)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/update-contributors.yml

@@ -31,7 +31,7 @@ jobs:
         run: python scripts/update_contributors.py
 
       - name: Commit changes
-        uses: stefanzweifel/git-auto-commit-action@v4.14.1
+        uses: stefanzweifel/git-auto-commit-action@v4.15.0
         with:
           commit_message: Update Contributors
           file_pattern: CONTRIBUTORS.md .github/contributors.json