[llvm] [LLVM] Update debuginfo maintainers (PR #120231)

[Nikita Popov via llvm-commits]

nikic wrote:

> I thought @dwblaikie and @adrian-prantl were the debug-info owners? Did that not get propagated correctly?

They are listed as the owners for clang debug info (see https://github.com/llvm/llvm-project/blob/main/clang/Maintainers.rst#debug-information). Should it be the same people for LLVM?

https://github.com/llvm/llvm-project/pull/120231