setup-github-actions-ci

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.80). The workflow uses external GitHub Actions that are fetched and executed at runtime (e.g., actions/checkout@v4, r-lib/actions/setup-r@v2, r-lib/actions/setup-r-dependencies@v2, codecov/codecov-action@v4, JamesIves/github-pages-deploy-action@v4), so remote code is pulled and run as a required dependency.