fix(ci): prevent commit if there are no changes

Author: hozlucas28

.github/workflows/format-code.yml

@@ -35,7 +35,7 @@ jobs:
                   git config --global user.name 'github-actions[bot]'
                   git config --global user.email 'github-actions[bot]@users.noreply.github.com'
                   git add .
-                  git commit -m "ci: format code"
+                  git diff-index --quiet HEAD || git commit -m "ci: format code"
 
             - name: Push changes
               uses: ad-m/[email protected]