Update rubocop requirement from 0.92.0 to 1.7.0

Updates the requirements on [rubocop](https://github.com/rubocop/rubocop) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.92.0...v1.7.0)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-type: direct:development
...

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

Gemfile

@@ -10,7 +10,7 @@ group :development, :test do
   gem 'rails'
   gem 'rake', '~> 13.0'
   gem 'rspec', '~> 3.11'
-  gem 'rubocop', '0.92.0'
+  gem 'rubocop', '1.7.0'
   gem 'rubocop-performance'
   gem 'rubocop-rspec'
   gem 'solargraph'