Bump rubocop from 1.7.0 to 1.8.0
Bump rubocop from 1.7.0 to 1.8.0

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop/compare/v1.7.0...v1.8.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sue445/cure-bots,sue445/cure-bots