chore(deps-dev): bump laravel/telescope from 5.3.0 to 5.12.0

Bumps [laravel/telescope](https://github.com/laravel/telescope) from 5.3.0 to 5.12.0.
- [Release notes](https://github.com/laravel/telescope/releases)
- [Changelog](https://github.com/laravel/telescope/blob/5.x/CHANGELOG.md)
- [Commits](laravel/telescope@v5.3.0...v5.12.0)

---
updated-dependencies:
- dependency-name: laravel/telescope
  dependency-version: 5.12.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]