Bump rubocop from 0.67.2 to 0.68.0 (#10654)

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.67.2 to 0.68.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.67.2...v0.68.0)

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

Gemfile

@@ -128,7 +128,7 @@ group :development do
   gem 'letter_opener', '~> 1.7'
   gem 'letter_opener_web', '~> 1.3'
   gem 'memory_profiler'
-  gem 'rubocop', '~> 0.67', require: false
+  gem 'rubocop', '~> 0.68', require: false
   gem 'brakeman', '~> 4.5', require: false
   gem 'bundler-audit', '~> 0.6', require: false
   gem 'scss_lint', '~> 0.57', require: false

Gemfile.lock

@@ -395,7 +395,7 @@ GEM
     parallel (1.17.0)
     parallel_tests (2.28.0)
       parallel
-    parser (2.6.2.1)
+    parser (2.6.3.0)
       ast (~> 2.4.0)
     pastel (0.7.2)
       equatable (~> 0.5.0)
@@ -420,7 +420,6 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    psych (3.1.0)
     public_suffix (3.0.3)
     puma (3.12.1)
     pundit (2.0.1)
@@ -528,11 +527,10 @@ GEM
       rspec-core (~> 3.0, >= 3.0.0)
       sidekiq (>= 2.4.0)
     rspec-support (3.8.0)
-    rubocop (0.67.2)
+    rubocop (0.68.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
       parser (>= 2.5, != 2.5.1.1)
-      psych (>= 3.1.0)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.6)
@@ -750,7 +748,7 @@ DEPENDENCIES
   rqrcode (~> 0.10)
   rspec-rails (~> 3.8)
   rspec-sidekiq (~> 3.0)
-  rubocop (~> 0.67)
+  rubocop (~> 0.68)
   sanitize (~> 5.0)
   scss_lint (~> 0.57)
   sidekiq (~> 5.2)