Add check so that the job is only run on a pull request

.github/workflows/update_pr_with_comment.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
  comment:
- if: ${{ github.event.workflow_run.conclusion == 'success' }}
+ if: ${{ github.event.workflow_run.conclusion == 'success' }} && ${{github.event_name == 'pull_request' }}
  runs-on: ubuntu-latest
  steps:
  - name: Get Artifact and Pull request info