[skip ci] Update mergify (#4657)

Signed-off-by: Xiangyu Wang <xiangyu.wang@zilliz.com>

.mergify/config.yml

@@ -1,12 +1,28 @@
 pull_request_rules:
-    - name: Automatic merge on approval
+    - name: Automatic merge on approval if CI is passed
       conditions:
-        - "label=automerge"
+        - "label=PR | automerge"
         - "#approved-reviews-by>=1"
         - "#review-requested=0"
         - "#changes-requested-reviews-by=0"
         - "status-success=DCO"
         - "status-success=continuous-integration/jenkins/pr-merge"
+        - "status-success=AMD64 Ubuntu 18.04"
+        - "status-success=AMD64 CentOS 7"
+        - "status-success=Codacy Static Code Analysis"
+      actions:
+        merge:
+          method: squash
+
+    - name: Automatic merge on approval if CI is skipped
+      conditions:
+        - "label=PR | automerge"
+        - "label=PR | skip-ci"
+        - "#approved-reviews-by>=1"
+        - "#review-requested=0"
+        - "#changes-requested-reviews-by=0"
+        - "status-success=DCO"
+        - "status-success=Codacy Static Code Analysis"
       actions:
         merge:
           method: squash
@@ -17,3 +33,4 @@ pull_request_rules:
       actions:
         comment:
           message: This pull request is now in conflicts. Could you fix it? 🙏
+