Bump rubocop from 1.50.2 to 1.51.0 (#89)

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.50.2 to 1.51.0.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.50.2...v1.51.0)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -27,8 +27,8 @@ GEM
  racc (~> 1.4)
  nokogiri (1.14.4-x86_64-linux)
  racc (~> 1.4)
- parallel (1.22.1)
- parser (3.2.2.0)
+ parallel (1.23.0)
+ parser (3.2.2.1)
  ast (~> 2.4.1)
  pry (0.14.2)
  coderay (~> 1.1)
@@ -40,7 +40,7 @@ GEM
  regexp_parser (2.8.0)
  require_all (3.0.0)
  rexml (3.2.5)
- rubocop (1.50.2)
+ rubocop (1.51.0)
  json (~> 2.3)
  parallel (~> 1.10)
  parser (>= 3.2.0.0)
@@ -50,7 +50,7 @@ GEM
  rubocop-ast (>= 1.28.0, < 2.0)
  ruby-progressbar (~> 1.7)
  unicode-display_width (>= 2.4.0, < 3.0)
- rubocop-ast (1.28.0)
+ rubocop-ast (1.28.1)
  parser (>= 3.2.1.0)
  ruby-progressbar (1.13.0)
  ruby2_keywords (0.0.5)