pr-auditor: report failures (#673)

part of https://github.com/sourcegraph/sourcegraph/issues/59055

Author: burmudar

.github/workflows/pr-auditor.yml

@@ -20,3 +20,8 @@ jobs:
           GITHUB_EVENT_PATH: ${{ env.GITHUB_EVENT_PATH }}
           GITHUB_TOKEN: ${{ secrets.PR_AUDITOR_TOKEN }}
           GITHUB_RUN_URL: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}
+  report_failure:
+    needs: check-pr
+    if: ${{ failure() }}
+    uses: sourcegraph/sourcegraph/.github/workflows/report-job-failure.yml@main
+    secrets: inherit