deps: upgrade to latest toolchain

[guybedford]

This updates to the latest wasm-tools release, including the Wasmtime upgrade PR in bytecodealliance/wasmtime#6777.

Currently this fails when running cargo test on the fs test cases due to the panic at https://github.com/bytecodealliance/wasm-tools/blob/main/crates/wasm-compose/src/encoding.rs#L660.

[alexcrichton]

I've opened bytecodealliance/wasm-tools#1147 to track the panic you're running into here which is from what we discussed on zulip

[guybedford]

I've updated this toolchain upgrade PR to the latest dependencies and rebased to main, but now am getting a new error in generating the WIT when running build-adapter.sh:

error: export parameter required for `wasi:poll/poll`
 --> virtual-adapter/src/lib.rs:6:1
  |
6 | / wit_bindgen::generate!({
7 | |     path: "../wit",
8 | |     world: "virtual-adapter"
9 | | });
  | |__^
  |
  = note: this error originates in the macro `wit_bindgen::generate` (in Nightly builds, run with -Z macro-backtrace for more info)

If I then edit the WIT file at wit/virt.wit to remove all the interface exports (but leave the imports), then it works.

Basically the failure seems to be for export wasi:poll/poll in the virtual-adapter world, where removing all of those fixes the issue.

[guybedford]

Ok, so this PR is now failing on the panic -

thread 'virt_test' panicked at 'failed to find alias of TypeId { index: 2, type_size: 1, unique_id: 2 }', /Users/gbedford/.cargo/git/checkouts/wasm-tools-30f99b8fb2d2db27/64fee0e/crates/wasm-compose/src/encoding.rs:660:17
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[guybedford]

Tests are finally all passing here. Will merge and release shortly.