v0.40.0: Release Wasmtime 0.40.0 (#4744)
[automatically-tag-and-release-this-commit] Co-authored-by: Wasmtime Publish <wasmtime-publish@users.noreply.github.com>
[automatically-tag-and-release-this-commit] Co-authored-by: Wasmtime Publish <wasmtime-publish@users.noreply.github.com>