[clang-tools-extra] [clang-tidy] Update llvmlibc-implementation-in-namespace to new rules (PR #66504)

[Piotr Zegar via cfe-commits]

PiotrZSL wrote:

> Where would that be? `clang-tools-extra/docs/ReleaseNotes.rst`? I can't find what the current release notes look like for head.

Yes, it's deployed here: https://clang.llvm.org/extra/ReleaseNotes.html



https://github.com/llvm/llvm-project/pull/66504