vulkan: Update Vulkan headers to 1.0.60

Summary of changes since 1.0.54:
* Added VK_KHR_relaxed_block_layout
* Added VK_EXT_post_depth_coverage
* Added VK_EXT_shader_viewport_index_layer
* Added VK_EXT_sample_locations
* Added VK_EXT_validation_cache
* Added VK_EXT_shader_stencil_export
* Added VK_AMD_mixed_attachment_samples
* Added VK_AMD_shader_fragment_mask
* VK_EXT_swapchain_colorspace added new enum VK_COLOR_SPACE_EXTENDED_SRGB_NONLINEAR_EXT
* Added const to some VK_EXT_debug_report function parameters

Test: build
Change-Id: Ibfbf84a50ab927e6e37cd4044d00b7375cd005e4