Danger: don't run on develop

.gitlab-ci.yml

@@ -33,6 +33,9 @@ danger:
     # https://github.com/danger/danger-js/issues/1029#issuecomment-998915436
     - export CI_MERGE_REQUEST_IID=${CI_OPEN_MERGE_REQUESTS#*!}
     - npx danger ci
+  except:
+    refs:
+      - $CI_DEFAULT_BRANCH
   allow_failure: true
   interruptible: true