FindVulkan: Fix for MSYS2 distro
The MSYS2 building platform provide https://packages.msys2.org/base/mingw-w64-vulkan-loader package that allow usage Vulkan API without installing SDK.
The MSYS2 building platform provide https://packages.msys2.org/base/mingw-w64-vulkan-loader package that allow usage Vulkan API without installing SDK.