Bump Rubocop to version 1.48.x (#9326)

Merge pull request 9326

.rubocop.yml

@@ -368,7 +368,7 @@ Style/GuardClause:
 Style/HashAsLastArrayItem:
   Enabled: true
 Style/HashConversion:
-  Enabled: true  
+  Enabled: true
 Style/HashEachMethods:
   Enabled: true
 Style/HashExcept:
@@ -392,6 +392,8 @@ Style/MapCompactWithConditionalBlock:
   Enabled: true
 Style/MapToHash:
   Enabled: true
+Style/MinMaxComparison:
+  Enabled: true
 Style/MixinUsage:
   Exclude:
     - test/helper.rb

Gemfile

@@ -23,7 +23,7 @@ group :test do
   gem "nokogiri", "~> 1.7"
   gem "rspec"
   gem "rspec-mocks"
-  gem "rubocop", "~> 1.45.0"
+  gem "rubocop", "~> 1.48.0"
   gem "rubocop-minitest"
   gem "rubocop-performance"
   gem "rubocop-rake"

lib/jekyll/site.rb

@@ -486,7 +486,7 @@ module Jekyll
     # Returns nothing
     def limit_posts!
       if limit_posts.positive?
-        limit = posts.docs.length < limit_posts ? posts.docs.length : limit_posts
+        limit = [posts.docs.length, limit_posts].min
         posts.docs = posts.docs[-limit, limit]
       end
     end