Bump wasmtime from 0.19.0 to 0.22.0 (paritytech#7865)

* Bump wasmtime from 0.19.0 to 0.22.0

Bumps [wasmtime](https://github.com/bytecodealliance/wasmtime) from 0.19.0 to 0.22.0.
- [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@v0.19.0...v0.22.0)

Signed-off-by: dependabot[bot] <[email protected]>

* Account for ImportType::name() being an Optional

* Account for parameters being a impl Iterator now

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alexander Theißen <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>

Author: 3 people