Potential fix for code scanning alert no. 328: Workflow does not contain permissions (#1294)

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

Author: AtsushiSakai

.github/workflows/codeql.yml

@@ -8,6 +8,8 @@ on:
   schedule:
     - cron: '0 19 * * 0'
 
+permissions:
+  contents: read
 jobs:
   CodeQL-Build: