Bump rubocop from 1.50.2 to 1.51.0

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](https://github.com/rubocop/rubocop/compare/v1.50.2...v1.51.0)

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

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

Gemfile.lock

@@ -462,10 +462,10 @@ GEM
     paper_trail (12.3.0)
       activerecord (>= 5.2)
       request_store (~> 1.1)
-    parallel (1.22.1)
+    parallel (1.23.0)
     paranoia (2.6.1)
       activerecord (>= 5.1, < 7.1)
-    parser (3.2.2.0)
+    parser (3.2.2.1)
       ast (~> 2.4.1)
     paypal-sdk-core (0.3.4)
       multi_json (~> 1.0)
@@ -615,7 +615,7 @@ GEM
     rswag-ui (2.9.0)
       actionpack (>= 3.1, < 7.1)
       railties (>= 3.1, < 7.1)
-    rubocop (1.50.2)
+    rubocop (1.51.0)
       json (~> 2.3)
       parallel (~> 1.10)
       parser (>= 3.2.0.0)
@@ -625,7 +625,7 @@ 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)
     rubocop-rails (2.19.1)
       activesupport (>= 4.2.0)