[ci:fix] Run only on pull requests

Author: nemesifier

.github/workflows/bot-ci-failure.yml

@@ -18,7 +18,7 @@ concurrency:
 jobs:
   find-pr:
     runs-on: ubuntu-latest
-    if: ${{ github.event.workflow_run.conclusion == 'failure' }}
+    if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.event == 'pull_request' }}
     outputs:
       pr_number: ${{ steps.pr.outputs.number }}
       pr_author: ${{ steps.pr.outputs.author }}

docs/developer/reusable-github-utils.rst

@@ -394,7 +394,7 @@ job:
     jobs:
       find-pr:
         runs-on: ubuntu-latest
-        if: ${{ github.event.workflow_run.conclusion == 'failure' }}
+        if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.event == 'pull_request' }}
         outputs:
           pr_number: ${{ steps.pr.outputs.number }}
           pr_author: ${{ steps.pr.outputs.author }}