Update to have a publish branch

Author: alan412

.github/workflows/deploy_gh_pages.yml

@@ -27,4 +27,5 @@
             uses: peaceiris/actions-gh-pages@v4
             with:
               github_token: ${{ secrets.GITHUB_TOKEN }}
-              publish_dir: ./dist # Directory containing your built output
+              publish_dir: ./dist # Directory containing your built output
+              publish_branch: gh-pages