build(deps): bump smithay-client-toolkit from 0.17.0 to 0.18.0

Bumps [smithay-client-toolkit](https://github.com/smithay/client-toolkit) from 0.17.0 to 0.18.0.
- [Changelog](https://github.com/Smithay/client-toolkit/blob/master/CHANGELOG.md)
- [Commits](Smithay/client-toolkit@v0.17.0...v0.18.0)

---
updated-dependencies:
- dependency-name: smithay-client-toolkit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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