comment GitHub Pages url to PR

Author: stefafafan

.github/workflows/branch-preview.yaml

@@ -64,6 +64,7 @@ jobs:
     permissions:
       pages: write
       id-token: write
+      pull-requests: write
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
@@ -73,3 +74,8 @@ jobs:
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4
+      - name: Comment URL to Pull Request
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          message: |
+            Deployed ${{ github.sha }} to ${{ steps.deployment.outputs.page_url }}/pr/${{ github.event.pull_request.number }}