[clang-tools-extra] [clang-tidy] Fix `readability-uppercase-literal-suffix` warning with hex literals (PR #156584)

[Carlos Galvez via cfe-commits]

https://github.com/carlosgalvezp commented:

LGTM, I wonder why the `bB` was there in the first place. Binary numbers?

https://github.com/llvm/llvm-project/pull/156584