Updates to volk, vulkan headers, `vk_enum_string_helper.h`, VMA,
glslang, spirv-reflect.
VMA doesn't tag SDK releases specifically, and still hasn't had a tagged
release since 3.0.1, but the Vulkan SDK now seems to ship a recent master
commit, so we do the same.
Updates to volk, vulkan headers, `vk_enum_string_helper.h`, glslang,
spirv-reflect.
No update to VMA which still has 3.0.1 as it's last tagged release.
Rémi Verschelde