deps: every crate to its latest version, wgpu 28 -> 30

`cargo upgrade --incompatible` in each of the nine workspaces here, then
`cargo update`. Most of it is version numbers only -- log, winit,
bytemuck, image, tokio, libc, android_logger, proc-macro2/quote, and syn
2 -> 3 with no source change. The wg-app-link submodule's twelve
dependencies were already at their latest majors, so that shared
repository needs no commit.

wgpu 28 -> 30 (and pollster 0.4 -> 1.0) is the part with API in it:
bind-group and vertex-buffer slots are optional now, `Instance::new`
takes an owned `InstanceDescriptor` carrying the platform's display
handle (the desktop passes winit's, since wgpu wants it for a GLES
surface presented on Wayland -- which is what this machine's fallback
produces; Android passes none), `RequestAdapterOptions` and
`SurfaceConfiguration` each gained a field kept at its historical value,
`get_current_texture` answers with an enum instead of a Result, and
`present` moved onto the queue.

The one that would not have failed at compile time: naga now requires
`@interpolate(flat)` on integer varyings, so `shader.wgsl`'s three u32
outputs were rejected at `create_shader_module` -- an abort on the device
rather than a build error. Flat is the only interpolation an integer can
have, so this states what the hardware already did.

Checked: build, clippy, fmt and tests in all nine workspaces (iris 196,
server 160); layer 2 screenshots on Vulkan and on force-gles, identical;
the arm64 release APK builds and the x86_64 bench ran a full
fling/stream/type/keyboard cycle on the emulator's GLES adapter.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

rigs/gpu-probe/Cargo.toml

@@ -10,8 +10,8 @@ edition = "2024"
 [dependencies]
 # Pinned to what iris asks for, so the answer is about iris rather than
 # about a different wgpu.
-wgpu = "28.0.0"
-pollster = "0.4.0"
+wgpu = "30.0.1"
+pollster = "1.0.1"
 # Queried directly, because wgpu and `cmd gpu vkjson` disagreed about
 # descriptor indexing in the emulator and only the raw call says which is
 # right.