Only run tests when app code changes

Author: carlpoole

.github/workflows/ui-tests.yml

@@ -1,6 +1,11 @@
 name: Run UI Tests
 
 on: pull_request
+  paths:
+  - 'IonicPortals/**'
+  - 'TestApp/**'
+  - 'TestAppCompose/**'
+
 jobs:
   test:
     runs-on: macos-latest