improvement(): make e2e workflow run only on merge to main

.github/workflows/e2e.yaml

@@ -3,7 +3,7 @@ on:
   push:
     branches: [main]
   pull_request:
-    branches: [main, dev]
+    branches: [main]
 
 env:
   NEXTAUTH_URL: "http://localhost:3000"
@@ -47,7 +47,6 @@ jobs:
       - name: Run backend
         run: task backend:run-web -- &
 
-
       - name: Get installed Playwright version
         id: playwright-version
         run: echo "PLAYWRIGHT_VERSION=$(node -e "console.log(require('./package-lock.json').dependencies['@playwright/test'].version)")" >> $GITHUB_ENV