Feature Request: update Windows actions builder to use *LATEST* Vulkan SDK (1.4.313 SDK) for VK_KHR_shader_bfloat16 support (like Linux builds)....

[oscarbg]

@0cc4m similar to past issue (#12294)..

Github Actions CI Windows Vulkan builds don't support VK_KHR_shader_bfloat16 yet..
for ex. latest:
https://github.com/ggml-org/llama.cpp/releases/download/b5686/llama-b5686-bin-win-vulkan-x64.zip
in contrast to:
https://github.com/ggml-org/llama.cpp/releases/download/b5686/llama-b5686-bin-ubuntu-vulkan-x64.zip
that has support for it..

Nvidia drivers and SDK are stable now for bfloat16 support..

fix for getting bfloat16 Vulkan support ((#12554)) on Windows builds is easy:

solution is:
to update:
VULKAN_VERSION: 1.4.309.0
to
VULKAN_VERSION: 1.4.313.0
in:
https://github.com/ggml-org/llama.cpp/blob/master/.github/workflows/build.yml#L686

@0cc4m can fix it?

thanks..

[oscarbg]

nice merged!..
NOTE: if/when VK_EXT_shader_float8 is added will require 1.4.321 release which also will require changes to Linux CI as now Vulkan SDK, no longer available as Ubuntu packages..
from https://vulkan.lunarg.com/sdk/home:
Deprecation Notice: LunarG will discontinue updating the Ubuntu Packages to newer SDK releases after the month of May, 2025. The Linux tarball should be used instead to keep up to date with Vulkan SDK releases.