Bump laravel/ui from 4.5.2 to 4.6.0

Bumps [laravel/ui](https://github.com/laravel/ui) from 4.5.2 to 4.6.0.
- [Release notes](https://github.com/laravel/ui/releases)
- [Changelog](https://github.com/laravel/ui/blob/4.x/CHANGELOG.md)
- [Commits](laravel/ui@v4.5.2...v4.6.0)

---
updated-dependencies:
- dependency-name: laravel/ui
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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