[rubygems/rubygems] Enable `Layout/EmptyLinesAroundAccessModifier`

https://github.com/rubygems/rubygems/commit/41b1cebc33

lib/rubygems/ext/ext_conf_builder.rb

@@ -88,6 +88,7 @@ class Gem::Ext::ExtConfBuilder < Gem::Ext::Builder
   end
 
   private
+
   def self.get_relative_path(path)
     path[0..Dir.pwd.length - 1] = '.' if path.start_with?(Dir.pwd)
     path

lib/rubygems/test_case.rb

@@ -1209,6 +1209,7 @@ Also, a list:
     # Return the join path, with escaping backticks, dollars, and
     # double-quotes.  Unlike `shellescape`, equal-sign is not escaped.
     private
+
     def escape_path(*path)
       path = File.join(*path)
       if %r'\A[-+:/=@,.\w]+\z' =~ path

lib/rubygems/user_interaction.rb

@@ -604,6 +604,7 @@ class Gem::StreamUI
     end
 
     private
+
     def locked_puts(message)
       MUTEX.synchronize do
         @out.puts message