chore: update ci

Author: AtticusZeller

.github/workflows/ci.yml

@@ -50,7 +50,7 @@ jobs:
   latest-changes:
     name: Latest Changes
     runs-on: ubuntu-latest
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    if: github.event_name == 'pull_request' && github.ref == 'refs/heads/main' && github.event.pull_request.merged == true && github.event_name == 'push'
     steps:
       - uses: actions/checkout@v4
         with: