Add condition to release job for pull requests

Author: gcatanese

.github/workflows/release.yml

@@ -22,6 +22,7 @@ on:
 
 jobs:
   release:
+    if: ${{ github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository }}
     permissions:
       contents: write
       pull-requests: write