Publish github pages only on push into the main branch

Author: JSMonk

.github/workflows/ci.yml

@@ -1,5 +1,9 @@
 name: Publish Application on GitHub Pages
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - main
+    
 jobs:
   # Build job
   build:
@@ -48,4 +52,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v4