Bump rubocop from 0.88.0 to 0.89.0 (#382)

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.88.0 to 0.89.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.88.0...v0.89.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

Gemfile.lock

@@ -329,7 +329,7 @@ GEM
       rspec-mocks (~> 3.9)
       rspec-support (~> 3.9)
     rspec-support (3.9.3)
-    rubocop (0.88.0)
+    rubocop (0.89.0)
       parallel (~> 1.10)
       parser (>= 2.7.1.1)
       rainbow (>= 2.2.2, < 4.0)
@@ -338,8 +338,8 @@ GEM
       rubocop-ast (>= 0.1.0, < 1.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (0.2.0)
-      parser (>= 2.7.0.1)
+    rubocop-ast (0.3.0)
+      parser (>= 2.7.1.4)
     rubocop-rails (2.7.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)