not required codeowner review by default

Author: Jeffreyhung

public/json/Default_ruleset.json

@@ -17,7 +17,7 @@
       "parameters": {
         "required_approving_review_count": 1,
         "dismiss_stale_reviews_on_push": false,
-        "require_code_owner_review": true,
+        "require_code_owner_review": false,
         "require_last_push_approval": false,
         "required_review_thread_resolution": false,
         "automatic_copilot_code_review_enabled": false