only check fork on PR events (#2011)

Author: haritamar

.github/workflows/test-warehouse.yml

@@ -84,7 +84,7 @@ jobs:
       - name: Set requires approval output
         id: set-output
         run: |
-          if [[ "${{ github.event_name }}" == "pull_request_target" && "${{ github.event.pull_request.head.repo.full_name }}" != "${{ github.repository }}" ]]; then
+          if [[ "${{ github.event_name }}" =~ ^pull_request && "${{ github.event.pull_request.head.repo.full_name }}" != "${{ github.repository }}" ]]; then
             echo "requires_approval=true" >> $GITHUB_OUTPUT
           else
             echo "requires_approval=false" >> $GITHUB_OUTPUT