Log Message:
cmake: updated to 3.18.4

CMake 3.18.4
* FindJNI: Add aarch64 support
* VS: Populate `std:c{11,17}` flag table entries for v142
* OBJCXX: Fix regression for compiling cpp files as objcxx
* VS: Fix regression in C# source links
* FindPython: Fix erroneous regex in ABI check
* Clang: Look for llvm-lib when using MSVC-like front-end
* FindCUDA/select_compute_arch: Add CUDA 11.1 and SM86 support