update gh action files

.github/workflows/main.yml

@@ -1,20 +1,12 @@
-name: Deploy
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
-
+name: End-to-end tests
+on: push
 jobs:
-  build:
-    runs-on: ubuntu-latest
+  cypress-run:
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
-      - uses: akhileshns/[email protected] # This is the action
-        with:
-          heroku_api_key: ${{secrets.HEROKU_API_KEY}}
-          heroku_app_name: ${{ secrets.HEROKU_APP_NAME }} #Must be unique in Heroku
-          heroku_email: ${{ secrets.HEROKU_EMAIL }}
+      - name: Checkout
+        uses: actions/checkout@v4
+      # Install npm dependencies, cache them correctly
+      # and run all Cypress tests
+      - name: Cypress run
+        uses: cypress-io/github-action@v6