fix: Do not attempt to push if no formatting necessary

Author: untitaker

.github/workflows/black.yml

@@ -19,7 +19,13 @@ jobs:
 
       - name: Commit changes
         run: |
+          if git diff-files --quiet; then
+            echo "No changes"
+            exit 0
+          fi
+
           git config --global user.name 'sentry-bot'
           git config --global user.email '[email protected]'
+
           git commit -am "fix: Formatting"
           git push