Fix combined report for release

Author: strtgbb

.github/workflows/release_branches.yml

@@ -633,7 +633,7 @@ jobs:
           CHECKS_DATABASE_USER: ${{ secrets.CHECKS_DATABASE_USER }}
           CHECKS_DATABASE_PASSWORD: ${{ secrets.CHECKS_DATABASE_PASSWORD }}
           COMMIT_SHA: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
-          PR_NUMBER: ${{ github.event.number }}
+          PR_NUMBER: ${{ github.event.pull_request.number || 0 }}
           ACTIONS_RUN_URL: ${{ github.event.repository.html_url }}/actions/runs/${{ github.run_id }}
         shell: bash
         run: |