Update workspace dependencies and bump MSRV (#1341)

* update wasm-tools dependencies to v224

* update wasi-common, wiggle and wasmtime deps

* update wast dependency to v224

* update downcast dependency

* use new sync crate feature from downcast-rs crate

* bump MSRV from 1.80 -> 1.81

.github/workflows/rust.yml

@@ -90,7 +90,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.80.0
+      - uses: dtolnay/rust-toolchain@1.81.0
       - uses: Swatinem/rust-cache@v2
       - run: >-
           cargo check