Merge pull request RustPython#4788 from youknowone/skip-ci

remove labeled event from ci trigger to prevent re-run ci whenever label added

Author: youknowone

.github/workflows/ci.yaml

@@ -2,7 +2,7 @@ on:
   push:
     branches: [main, release]
   pull_request:
-    types: [labeled, unlabeled, opened, synchronize, reopened]
+    types: [unlabeled, opened, synchronize, reopened]
   merge_group:
 
 name: CI