Always build the app if packages have changed

Author: markharding

.gitlab/ci/build_app.yml

@@ -5,12 +5,14 @@
       when: always
     - if: $CI_PIPELINE_SOURCE == "merge_request_event"
       changes:
+        - packages/**/*
         - apps/**/*
         - .gitlab/ci/build_app.yml
     - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS
       when: never
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
       changes:
+        - packages/**/*
         - apps/**/*
         - .gitlab/ci/build_app.yml