fix: pinning wasmtime version

Signed-off-by: Andrew Steurer <94206073+asteurer@users.noreply.github.com>

Author: asteurer

.github/workflows/pr.yaml

@@ -35,5 +35,7 @@ jobs:
         with:
           go-version: 'stable'
       - uses: bytecodealliance/actions/wasmtime/setup@v1
+        with:
+          version: "40.0.2"
       - run: rustup update stable --no-self-update && rustup default stable
       - run: cargo test --workspace