Bump Wasmtime to 2.0.0 (#4874)

This commit replaces #4869 and represents the actual version bump that
should have happened had I remembered to bump the in-tree version of
Wasmtime to 1.0.0 prior to the branch-cut date. Alas!

crates/wasi-nn/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-wasi-nn"
-version = "0.41.0"
+version = "2.0.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Wasmtime implementation of the wasi-nn API"
 documentation = "https://docs.rs/wasmtime-wasi-nn"
@@ -14,7 +14,7 @@ edition = "2021"
 [dependencies]
 # These dependencies are necessary for the witx-generation macros to work:
 anyhow = "1.0"
-wiggle = { path = "../wiggle", version = "=0.41.0" }
+wiggle = { path = "../wiggle", version = "=2.0.0" }
 
 # These dependencies are necessary for the wasi-nn implementation:
 openvino = { version = "0.4.1", features = ["runtime-linking"] }