Fix syncbot workflow to run on pull_request events

Author: diegolovison

.github/workflows/syncbot.yml

@@ -9,7 +9,6 @@ on:
 jobs:
   prep-changes:
     runs-on: ubuntu-latest
-    if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success'
     steps:
       - uses: actions/checkout@v6