Make build-approved release pending PR workflows

.github/workflows/test.yml

@@ -32,6 +32,9 @@ jobs:
         with:
           persist-credentials: false
 
+      - name: Test PR workflow approval
+        run: node --test tests/pr-workflow-approval.cjs
+
       # An Arch container for vercmp: version ordering has to be decided by
       # the same comparator pacman uses on users' machines.
       - name: Run self-tests