Update mergify/config

Signed-off-by: NJinHai-CN <hai.jin@zilliz.com>

.mergify/config.yml

 pull_request_rules:
-    - name: Automatic merge on approval
+    - name: Automatic merge on approval if CI is passed
       conditions:
         - "label=automerge"
         - "#approved-reviews-by>=1"
@@ -16,6 +16,16 @@ pull_request_rules:
         merge:
           method: squash
 
+    - name: Automatic merge on approval if CI is skipped
+      conditions:
+        - "label=automerge"
+        - "label=skip-ci"
+        - "status-success=DCO"
+        - "status-success=Codacy/PR Quality Review"
+      actions:
+        merge:
+          method: squash
+
     - name: Ask to resolve conflict
       conditions:
         - conflict