Bump gitlab-styles v7.0.0

.rubocop_todo/graphql/argument_uniqueness.yml

+---
+GraphQL/ArgumentUniqueness:
+  Exclude:
+    - app/graphql/resolvers/merge_requests_resolver.rb

.rubocop_todo/graphql/unused_argument.yml

+---
+GraphQL/UnusedArgument:
+  Exclude:
+    - app/graphql/mutations/jira_import/start.rb
+    - app/graphql/resolvers/packages_base_resolver.rb

Gemfile

@@ -374,7 +374,7 @@ group :development, :test do
   gem 'spring', '~> 2.1.0'
   gem 'spring-commands-rspec', '~> 1.0.4'
 
-  gem 'gitlab-styles', '~> 6.6.0', require: false
+  gem 'gitlab-styles', '~> 7.0.0', require: false
 
   gem 'haml_lint', '~> 0.36.0', require: false
   gem 'bundler-audit', '~> 0.7.0.1', require: false

Gemfile.lock

@@ -501,7 +501,7 @@ GEM
       openid_connect (~> 1.2)
     gitlab-sidekiq-fetcher (0.8.0)
       sidekiq (~> 6.1)
-    gitlab-styles (6.6.0)
+    gitlab-styles (7.0.0)
       rubocop (~> 0.91, >= 0.91.1)
       rubocop-gitlab-security (~> 0.1.1)
       rubocop-graphql (~> 0.10)
@@ -1115,7 +1115,7 @@ GEM
       parser (>= 2.7.1.5)
     rubocop-gitlab-security (0.1.1)
       rubocop (>= 0.51)
-    rubocop-graphql (0.10.3)
+    rubocop-graphql (0.13.0)
       rubocop (>= 0.87, < 2)
     rubocop-performance (1.9.2)
       rubocop (>= 0.90.0, < 2.0)
@@ -1489,7 +1489,7 @@ DEPENDENCIES
   gitlab-net-dns (~> 0.9.1)
   gitlab-omniauth-openid-connect (~> 0.9.0)
   gitlab-sidekiq-fetcher (= 0.8.0)
-  gitlab-styles (~> 6.6.0)
+  gitlab-styles (~> 7.0.0)
   gitlab_chronic_duration (~> 0.10.6.2)
   gitlab_omniauth-ldap (~> 2.1.1)
   gon (~> 6.4.0)