Revert "Update mergify.yml"

This reverts commit 8b4dce8.

Signed-off-by: Yang Chiu <[email protected]>

.github/mergify.yml

@@ -5,8 +5,9 @@ pull_request_rules:
   - check-success=DCO
   - check-success=CodeFactor
   - check-success=codespell
-  - "#approved-reviews-by>=2"
-  - approved-reviews-by=[@longhorn/maintainer, @longhorn/qa]
+  - "#approved-reviews-by>=1"
+  - approved-reviews-by=@longhorn/maintainer
+  - label=ready-to-merge
   actions:
     merge:
       method: rebase
@@ -16,4 +17,18 @@ pull_request_rules:
   - conflict
   actions:
     comment:
-      message: This pull request is now in conflict. Could you fix it @{{author}}? 🙏
+      message: This pull request is now in conflicts. Could you fix it @{{author}}? 🙏
+
+# Comment on the PR to trigger backport. ex: @Mergifyio copy stable/3.1 stable/4.0
+- name: backport patches to stable branch
+  conditions:
+  - base=master
+  actions:
+    backport:
+      title: "[BACKPORT][{{ destination_branch }}] {{ title }}"
+      body: |
+        This is an automatic backport of pull request #{{number}}.
+        
+        {{cherry_pick_error}}
+      assignees:
+      - "{{ author }}"