ci(Mergify): configuration update (#16655)

Signed-off-by: Ankush Menat <me@ankush.dev>

[skip ci]

.mergify.yml

@@ -53,3 +53,43 @@ pull_request_rules:
             {{ title }} (#{{ number }})
 
             {{ body }}
+            
+  - name: backport to develop
+    conditions:
+      - label="backport develop"
+    actions:
+      backport:
+        branches:
+          - develop
+        assignees:
+          - "{{ author }}"
+
+  - name: backport to version-13-hotfix
+    conditions:
+      - label="backport version-13-hotfix"
+    actions:
+      backport:
+        branches:
+          - version-13-hotfix
+        assignees:
+          - "{{ author }}"
+
+  - name: backport to version-13-pre-release
+    conditions:
+      - label="backport version-13-pre-release"
+    actions:
+      backport:
+        branches:
+          - version-13-pre-release
+        assignees:
+          - "{{ author }}"
+
+  - name: backport to version-12-hotfix
+    conditions:
+      - label="backport version-12-hotfix"
+    actions:
+      backport:
+        branches:
+          - version-12-hotfix
+        assignees:
+          - "{{ author }}"