fix: skip pr description update for forks

Author: astandrik

.github/workflows/quality.yml

@@ -199,7 +199,7 @@ jobs:
   update_pr:
     name: Update PR Description
     needs: [merge_reports, bundle_size]
-    if: always() && github.event_name == 'pull_request'
+    if: always() && github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
     runs-on: ubuntu-latest
     permissions:
       pull-requests: write