Disable automatic CI jobs for every pushed branch

.gitlab-ci.yml

@@ -14,9 +14,10 @@ variables: &global_variables
 workflow:
   rules:
     - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_COMMIT_BRANCH == "develop"
+    - if: $CI_COMMIT_BRANCH == "stable"
     - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS
       when: never
-    - if: $CI_COMMIT_BRANCH
 
 cache: &global_cache_policy
   key: $CI_JOB_IMAGE-$CI_COMMIT_SHORT_SHA