Provide builds for releases as well

[oscarbg]

Hi,
similar request to:
KhronosGroup/glslang#3195

might avoid getting either prebuilt master releases (like: https://storage.googleapis.com/spirv-tools/badges/build_link_macos_clang_release.html for MacoSX) or having for a tagged release to get full Vulkan SDK to get just that, or build from source..

jointly with glslang prebuilt for tagged releases useful for simple experiments but not wanting to get full Vulkan SDK..

thanks..

[oscarbg]

for example missing for
https://github.com/KhronosGroup/SPIRV-Tools/releases/tag/v2026.2
would be nice for 2026.3 release..