Update .asf.yaml adding dismiss_stale_reviews to true and require_last_push_approval to false (#1265)

Author: jbonofre

.asf.yaml

@@ -41,6 +41,8 @@ github:
     main:
       required_pull_request_reviews:
         require_code_owner_reviews: false
+        dismiss_stale_reviews: true
+        require_last_push_approval: false
         required_approving_review_count: 1
 
       required_linear_history: true