Bump wasmtime from 17.0.1 to 18.0.2 in /rust

Bumps [wasmtime](https://github.com/bytecodealliance/wasmtime) from 17.0.1 to 18.0.2.
- [Release notes](https://github.com/bytecodealliance/wasmtime/releases)
- [Changelog](https://github.com/bytecodealliance/wasmtime/blob/main/docs/WASI-some-possible-changes.md)
- [Commits](bytecodealliance/wasmtime@v17.0.1...v18.0.2)

---
updated-dependencies:
- dependency-name: wasmtime
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>