fix: add explicit permissions to e2e CI job (CodeQL)

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -118,6 +118,8 @@ jobs:
     name: E2E Tests
     runs-on: ubuntu-latest
     needs: build
+    permissions:
+      contents: read
 
     steps:
       - name: Checkout code