fix(ci): run tests for pull requests

Author: CNSeniorious000

.github/workflows/test.yml

@@ -1,10 +1,6 @@
 name: test & export coverage report
 
-on:
-  push:
-    branches:
-      - main
-  workflow_dispatch:
+on: [push, pull_request, workflow_dispatch]
 
 permissions:
   contents: read
@@ -35,5 +31,6 @@ jobs:
         with:
           path: coverage
       - name: Deploy to GitHub Pages
+        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
         id: deployment
         uses: actions/deploy-pages@v4