chore: Simplify PR preview deployment workflow trigger

Author: Siumauricio

.github/workflows/deploy.yml

@@ -2,11 +2,8 @@ name: Deploy PR previews
 
 on:
   pull_request:
-    types:
-      - opened
-      - reopened
-      - synchronize
-      - closed
+    branches:
+      - main
 
 concurrency: preview-${{ github.ref }}