Update GitHub Actions workflow to conditionally commit and push changes to README.md

Author: hantdev

.github/workflows/update_readme.yml

@@ -27,10 +27,13 @@ jobs:
       - name: Run update script
         run: python automata.py
 
-      - name: Commit and push changes
+      - name: Commit and push if changed
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           git config --global user.name "GitHub Action Bot"
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
           git add README.md
           git diff --staged --quiet || git commit -m "Auto-update README.md"
-          git push
+          git push https://x-access-token:${GITHUB_TOKEN}@github.com/${{ github.repository }}.git main
+