Update py312-sync-cpython.yml

Author: ken71301

.github/workflows/py312-sync-cpython.yml

@@ -1,11 +1,7 @@
 name: python-3.12-sync-with-cpython
 
 on:
-  push:
-    branches:
-      - "3.12"
-  schedule:
-    - cron: "0 0 * * *"
+  pull_request:
 
 jobs:
   sync:
@@ -61,4 +57,4 @@ jobs:
       - name: Check outputs
         run: |
           echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
-          echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"
+          echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"