Potential fix for code scanning alert no. 2: Workflow does not contain permissions

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

Author: rajbos

.github/workflows/ci.yml

@@ -22,6 +22,9 @@ concurrency:
   group: "ci-${{ github.head_ref || github.ref }}"
   cancel-in-progress: true
 
+permissions:
+  contents: read
+
 jobs:
   # Build validation job
   build: