mergify: support for backport-major.minor (#40716)

.mergify.yml

@@ -146,20 +146,21 @@ pull_request_rules:
 
           To fixup this pull request, you need to add the backport labels for the needed
           branches, such as:
-          * `backport-v8./d.0` is the label to automatically backport to the `8./d` branch. `/d` is the digit
-  - name: add backport-v8.x label for main only
+          * `backport-8./d` is the label to automatically backport to the `8./d` branch. `/d` is the digit
+
+  - name: add backport-8.x label for main only
     conditions:
-      - -label~=^backport-v8.x
+      - -label~=^backport-8.x
       - base=main
       - -merged
       - -closed
     actions:
       comment:
         message: |
-          `backport-v8.x` has been added to help with the transition to the new branch `8.x`.
+          `backport-8.x` has been added to help with the transition to the new branch `8.x`.
       label:
         add:
-          - backport-v8.x
+          - backport-8.x
   - name: notify the backport has not been merged yet
     conditions:
       - -merged
@@ -175,7 +176,7 @@ pull_request_rules:
   - name: backport patches to 7.17 branch
     conditions:
       - merged
-      - label=backport-v7.17.0
+      - label~=^(backport-v7.17.0|backport-7.17)$
     actions:
       backport:
         assignees:
@@ -344,7 +345,7 @@ pull_request_rules:
   - name: backport patches to 8.15 branch
     conditions:
       - merged
-      - label=backport-v8.15.0
+      - label~=^(backport-v8.15.0|backport-8.15)$
     actions:
       backport:
         assignees:
@@ -357,7 +358,7 @@ pull_request_rules:
   - name: backport patches to 8.x branch
     conditions:
       - merged
-      - label=backport-v8.x
+      - label~=^(backport-v8.x|backport-8.x)$
     actions:
       backport:
         assignees: