chore: add yarn.lock to pick up dep changes in test workflow

Author: joshuaellis

.github/workflows/tests.yml

@@ -26,6 +26,7 @@ jobs:
               - 'packages/**'
               - 'targets/**'
               - 'cypress/**'
+              - 'yarn.lock'
               - '.github/workflows/checks.yml'
               - '.github/workflows/tests.yml'
   build: