chore(ci): Run unit tests on PR

Author: jamesdaniels

.github/workflows/test.yml

@@ -1,6 +1,6 @@
 name: Unit tests
 
-on: [push]
+on: [push, pull_request]
 
 jobs:
   build:
@@ -26,4 +26,4 @@ jobs:
         yarn install --frozen-lockfile --prefer-offline
         yarn lint
         yarn build
-        yarn test:all
+        yarn test:all