Update stefanzweifel/git-auto-commit-action action to v6

Author: renovate[bot]

.github/workflows/mega-linter.yml

@@ -79,7 +79,7 @@ jobs:
         run: sudo chown -Rc $UID .git/
       - name: Commit and push applied linter fixes
         if: steps.ml.outputs.has_updated_sources == 1 && (env.APPLY_FIXES_EVENT == 'all' || env.APPLY_FIXES_EVENT == github.event_name) && env.APPLY_FIXES_MODE == 'commit' && github.ref != 'refs/heads/master' && github.event.pull_request.head.repo.full_name == github.repository
-        uses: stefanzweifel/git-auto-commit-action@v5
+        uses: stefanzweifel/git-auto-commit-action@v6
         with:
           branch: ${{ github.event.pull_request.head.ref || github.head_ref || github.ref }}
           commit_message: "[Mega-Linter] Apply linters fixes"