Potential fix for code scanning alert no. 6: Workflow does not contain permissions (#64)

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

Author: qdequippe

.github/workflows/ci.yml

@@ -5,6 +5,9 @@ on:
         branches: [ main ]
     pull_request:
 
+permissions:
+    contents: read
+
 jobs:
     check-cs:
         name: Coding Style