Update auto-update.yml

.github/workflows/auto-update.yml

@@ -18,6 +18,7 @@ jobs:
         run: |
           git config --local user.email "[email protected]"
           git config --local user.name "GitHub Action"
+          git config --global --add safe.directory /github/workspace
           git add github-markdown.css
           git commit -m "Auto update" || true
       - name: Push back