Build fails on machines that support AVX512.

When building DiscordCoreAPI, the build explodes on systems that support AVX 512 such as my Ryzen AI 9 HX 370 with errors like: ``` D:\vcpkg\installed\x64-windows\include\jsonifier/ISA/AVX.hpp(262): error C3861: '_mm512_movemask_epi8': identifier not found D:\vcpkg\installed\x64-windows\include\jsonifier/ISA/AVX.hpp(262): note: '_mm512_movemask_epi8': function was not declared in the template definition context and can be found only via argument-dependent lookup in the instantiation context ``` Did you mean `_mm512_movepi8_mask`? This doesn't happen in vcpkg's build lab because it doesn't currently run on a CPU that supports AVX512.