Update ASTC submodule (#228)
Update ASTC submodule (#228)

It is only 1 commit ahead of the current one and
it updates the submodule to use the Apache 2.0 license
without affecting the code
KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples,KhronosGroup/Vulkan-Samples