bump(slang): update to v2025.4

[renovate]

This PR contains the following updates:

Package	Update	Change
slang	minor	v2025.3.2 -> v2025.4

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Release Notes

shader-slang/slang (slang)

v2025.4

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v2025.3.3

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Supports Cooperative Vector

=== Breaking changes ===
No breaking changes

=== All changes for this release ===
fb052bf Support cooperative vector including Vulkan-Header (#​6228)
7a8131d Add coop-vec insts to non-differentiable insts list (#​6227)
ba9b278 Support cooperative vector (#​6223)
2ae194d Fix ConstantIntVal::toText when the val is a enum. (#​6224) (#​6225:client support)
cbcb97a Update SPIRV submodules and fix tests (#​6222)
2ba6458 Fix combined sampler documentation and warning (#​6207) (#​5938:quality & productivity)
6052043 Fix the type coerce issue (#​6215)
c18c436 Fix loophole in hoisting where an OpVar's uses might not be properly registered for replacement (#​6212)
1c282b8 Implement WaveMultiPrefix* for SPIRV and GLSL (#​6182) (#​6180:client support)
cf66563 Fix exact-match witness synthesis for static functions (#​6204)
1f99c20 Fix UIntSet calcSubtract to handle mismatched buffer sizes (#​6205)
f4e3692 Proposal for Cooperative Vector in Slang (#​6209)
b3c6212 Add slangpy proposal (#​6156)
c356d3a Allow requiring glsl language extensions on structs (#​6173)
a5b1aa0 Added const version for the operator[] in Matrix (#​6186)
92a48f6 Delete invalid ASSERT in isTypeOperandEqual. (#​6196) (#​6194:quality & productivity)
4b9a342 Fix geometry shader related modifier lowering. (#​6197) (#​6185:quality & productivity)
cd27fbd Add a unit test to cover type-conformance compilation API. (#​6178) (#​6179:quality & productivity)
31bb5ea Add an example for reflection of parameter blocks (#​6161)
f030a5a Properly plumbing layout for global varyings. (#​6198) (#​6188:quality & productivity)

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