Potential fix for code scanning alert no. 3: Workflow does not contain permissions

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

Author: jeffpaul

.github/workflows/phpcs.yml

@@ -9,6 +9,9 @@ on:
     branches:
       - develop
 
+permissions:
+  contents: read
+
 jobs:
   phpcs:
     runs-on: ubuntu-latest