wgpu 27

[Firestar99]

• most of the diff is lockfiles from cargo update
• update to wgpu 27
  • required for Add naga-wgsl target v2 #493, it seems naga 27 and wgpu 26 are biting themselves if they're in your dep tree
• wgpu 28 just released, but requires rustc 1.92 (current stable), which we don't support yet
  • (cargo gpu does through decoupling the CPU and shader toolchains)

[LegNeato]

Looks reasonable, thanks!