build(deps): bump rubocop-ast from 1.6.0 to 1.7.0 in /Library/Homebrew

Bumps [rubocop-ast](https://github.com/rubocop-hq/rubocop-ast) from 1.6.0 to 1.7.0.
- [Release notes](https://github.com/rubocop-hq/rubocop-ast/releases)
- [Changelog](https://github.com/rubocop/rubocop-ast/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop-ast/compare/v1.6.0...v1.7.0

)

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