test preventing merge when failing 2

.github/workflows/pr-timing-checker.yml

@@ -26,7 +26,7 @@ jobs:
           if [ $AGE_IN_DAYS -lt 7 ]; then
             if [[ $(echo "${{ github.event.pull_request.labels.*.name }}" | grep -c 'fast-merge') -eq 0 ]]; then
               echo "Error: PR is less than 7 days old and does not have the 'fast-merge' label."
-              echo "::set-output name=failure::true"
+              exit 1
             fi
           fi
         env: