Upgrade gem "rubocop"

.rubocop.yml

@@ -37,7 +37,7 @@ Metrics/ClassLength:
   Exclude:
     - 'db/migrate/*.rb'
 
-Metrics/LineLength:
+Layout/LineLength:
   Exclude:
     - 'config/initializers/simple_form.rb'
     - 'config/initializers/simple_form_bootstrap.rb'

Gemfile

@@ -135,7 +135,7 @@ group :development, :test do
 
   # Automatic Ruby code style checking tool.
   # Aims to enforce the community-driven Ruby Style Guide.
-  gem 'rubocop', '~> 0.72.0'
+  gem 'rubocop', '~> 0.79.0'
 
   # A collection of RuboCop cops
   # to check for performance optimizations in Ruby code.

Gemfile.lock

@@ -387,10 +387,10 @@ GEM
       rspec-mocks (~> 3.9.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.2)
-    rubocop (0.72.0)
+    rubocop (0.79.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
-      parser (>= 2.6)
+      parser (>= 2.7.0.1)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.7)
@@ -537,7 +537,7 @@ DEPENDENCIES
   redis (~> 4.1)
   rest-client (~> 2.1)
   rspec-rails (~> 3.8)
-  rubocop (~> 0.72.0)
+  rubocop (~> 0.79.0)
   rubocop-performance (~> 1.4)
   rubocop-rails (~> 2.2)
   rubocop-rspec (~> 1.36)