[workflows] Add top-level permissions for libcxx-build-and-test.yaml (#73689)

[llvm-project.git] / SECURITY.md

# Reporting LLVM Security Issues

To report security issues in LLVM, please follow the steps outlined on the
[LLVM Security Group](https://llvm.org/docs/Security.html#how-to-report-a-security-issue)
page.