CI: accidentally disabled version check

.gitlab-ci.yml

@@ -40,8 +40,7 @@ check-version:
     - fsl-ci
     - docker
   rules:
-    - if:   '$CI_COMMIT_BRANCH == "master"'
-      when: never
+    - if: '$CI_COMMIT_BRANCH != "master"'
   script:
     - git fetch origin master
     - thisver=$(  cat manifest_rules/__init__.py                    | grep __version__ | cut -d " " -f 3 | tr -d "'")