[libc-commits] [libc] [libc] Use `yaml.safe_load` rather than `yaml.load` (PR #109557)

[Petr Hosek via libc-commits]

petrhosek wrote:

We already switched to `yaml.safe_load` elsewhere in https://github.com/llvm/llvm-project/pull/105374 and haven't seen any breakages.

https://github.com/llvm/llvm-project/pull/109557