1163: Bump gfx to latest master r=kvark a=mkeeter

**Connections**
- This bumps `gfx` to [#3610](gfx-rs/gfx#3610), and also includes [#3608](gfx-rs/gfx#3608) and [#3609](gfx-rs/gfx#3608)
- [Here](gfx-rs/wgpu-native#66) is a draft PR to `wgpu-native`
- `wgpu-rs` requires a one-line fix to the `texture_view_drop` call (which now takes a boolean); I can PR this next.

**Description**
This fixes [pathological shader complexity in SPIRV-Cross](KhronosGroup/SPIRV-Cross#1594), as well as a few other `gfx` PRs.

**Testing**
I updated `wgpu-native` to use this branch, then updated my [toy raytracer](https://github.com/mkeeter/rayray) to use the resulting `dylibs` and confirmed that it no longer takes forever to compile the pathological shader.

In addition, I updated `wgpu-rs` and went through the examples; nothing seems out of place.

Co-authored-by: Matt Keeter <matt.j.keeter@gmail.com>