[clang] [clang-tools-extra] [compiler-rt] [libcxx] [lld] [lldb] [llvm] [mlir] [polly] fix(python): fix invalid escape sequences (PR #91856)

[Eisuke Kawashima via llvm-commits]

https://github.com/e-kwsm closed https://github.com/llvm/llvm-project/pull/91856