Potential fix for code scanning alert no. 1: Workflow does not contain permissions (#82)

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

Author: manusoft

.github/workflows/ci-pr.yml

@@ -4,6 +4,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   validate:
     name: Validate PR