add targets vulkan1.3, vulkan1.4 and spv1.6

[Firestar99]

Requires #279, Rust-GPU/spirv-tools-rs#11

I thought it'll be easy going, but it seems like spv1.6 introduced some new validation we're now failing. Nope, just some tests excluded for vulkan that need their target list extended.

[Firestar99]

Compiletest fails due to the installed tools being too old and not knowing what vulkan1.4 is.

Current CI downloads a pre-build version of spirv tools from Embark's spirv-tools repo, specifically release 0.10.0, which includes some pre-build *.tar.zstd blobs. Supposedly I could just trigger the "Precompile spirv-tools binaries" Action but that one has been broken likely by basel updating something. @LegNeato tried fixing it on master, but no luck so far.

Some Options we have to fix this:

1. fixup bazal build and publish a new set of pre-builds
2. grab the binaries from lunarg, the official source and get rid of bazel
3. derp some blobs together on my local machine, but I can't do Mac
4. recompile on CI every time, too slow IMO

I'm considering trying out 2 tomorrow, or do you @LegNeato have a better idea?

This also unblocks #258

[Firestar99]

@LegNeato This is effectively ready to review, it just requires #279 and spirv-tools-rs PR Rust-GPU/spirv-tools-rs#11 to be merged and released on crates.