d3d12: upgrade WARP version on CI
Right now, there's a bunch of test-failures in the CI build due to an out-of-date WARP version.
We can't upgrade WARP without upgrading both the kernel on the CI runner and the builder-images, and it's not 100% clear which versions (if any yet) has the bugfixes we need for WARP.
@jenatali: Could you figure out what version we need to fix the known, D3D12-affecting WARP bugs? Or can you let us know when it's available if it's not out yet?