loader: Fix the std_validation version to really be loader's built version
loader: Fix the std_validation version to really be loader's built version

Change-Id: I2ff3b6dab4209b152f487649db011cdfa7c8975b

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools