ci: also trigger ci with pull requests

Author: JavierCane

.github/workflows/ci.yml

@@ -1,6 +1,10 @@
 name: CI
 
-on: push
+on:
+  push:
+    branches:
+      - main
+  pull_request:
 
 jobs:
   unit:
@@ -30,4 +34,4 @@ jobs:
         run: npm run lint
 
       - name: ✅ Run tests
-        run: npm run test
+        run: npm run test