Draft: Change ReduceMean attribute 'axes' from static array to dynamic vector

.gitlab/ci/_global.gitlab-ci.yml

@@ -13,6 +13,7 @@ variables:
 workflow:
   rules:
     - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - echo $CI_OPEN_MERGE_REQUEST
     - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS
       when: never
     - if: $CI_COMMIT_BRANCH