Bump RuboCop to v0.79.x (#7970)

Merge pull request 7970

.rubocop.yml

@@ -21,13 +21,13 @@ AllCops:
     - script/**/*
     - vendor/**/*
     - tmp/**/*
-Layout/AlignHash:
+Layout/HashAlignment:
   EnforcedHashRocketStyle: table
 Layout/IndentationWidth:
   Severity: error
-Layout/IndentFirstArrayElement:
+Layout/FirstArrayElementIndentation:
   EnforcedStyle: consistent
-Layout/IndentFirstHashElement:
+Layout/FirstHashElementIndentation:
   EnforcedStyle: consistent
 Layout/MultilineMethodCallIndentation:
   EnforcedStyle: indented
@@ -65,7 +65,7 @@ Metrics/CyclomaticComplexity:
   Exclude:
     - lib/jekyll/utils.rb
     - lib/jekyll/commands/serve.rb
-Metrics/LineLength:
+Layout/LineLength:
   Exclude:
     - !ruby/regexp /features\/.*.rb/
     - Rakefile

Gemfile

@@ -27,7 +27,7 @@ group :test do
   gem "nokogiri", "~> 1.7"
   gem "rspec"
   gem "rspec-mocks"
-  gem "rubocop", "~> 0.76.0"
+  gem "rubocop", "~> 0.79.0"
   gem "rubocop-performance"
   gem "test-dependency-theme", :path => File.expand_path("test/fixtures/test-dependency-theme", __dir__)
   gem "test-theme", :path => File.expand_path("test/fixtures/test-theme", __dir__)

lib/jekyll/excerpt.rb

@@ -56,7 +56,7 @@ module Jekyll
     #
     # Returns true if the string passed in
     def include?(something)
-      (output&.include?(something)) || content.include?(something)
+      output&.include?(something) || content.include?(something)
     end
 
     # The UID for this doc (useful in feeds).

test/test_liquid_renderer.rb

@@ -14,13 +14,13 @@ class TestLiquidRenderer < JekyllUnitTest
 
       output = @renderer.stats_table
 
-      # rubocop:disable Metrics/LineLength
+      # rubocop:disable Layout/LineLength
       expected = [
         %r!^\| Filename\s+|\s+Count\s+|\s+Bytes\s+|\s+Time$!,
         %r!^\+(?:-+\+){4}$!,
         %r!^\|_posts/2010-01-09-date-override\.markdown\s+|\s+\d+\s+|\s+\d+\.\d{2}K\s+|\s+\d+\.\d{3}$!,
       ]
-      # rubocop:enable Metrics/LineLength
+      # rubocop:enable Layout/LineLength
 
       expected.each do |regexp|
         assert_match regexp, output