Merge branch 'leipert-update-ci-yml' into 'master'

Run QA frontend jobs when dependencies are updated

See merge request gitlab-org/gitlab!26837

.gitlab/ci/rules.gitlab-ci.yml

@@ -80,6 +80,9 @@
   - "{,ee/}{app,bin,config,db,haml_lint,lib,locale,public,scripts,symbol,vendor}/**/*"
   - "doc/api/graphql/reference/*"  # Files in this folder are auto-generated
 
+.frontend-dependency-patterns: &frontend-dependency-patterns
+  - "{package.json,yarn.lock}"
+
 .qa-patterns: &qa-patterns
   - ".dockerignore"
   - "qa/**/*"
@@ -270,6 +273,9 @@
   rules:
     - <<: *if-master-refs
       when: on_success
+    - <<: *if-merge-request
+      changes: *frontend-dependency-patterns
+      when: on_success
 
 ################
 # Memory rules #