Potential fix for code scanning alert no. 132: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: ScriptedAlchemy

.github/workflows/e2e-next-app-router.yml

@@ -3,6 +3,9 @@ name: E2E Test for Next.js App Router
 on:
   workflow_call:
 
+permissions:
+  contents: read
+
 jobs:
   e2e-next-app-router:
     runs-on: ubuntu-latest