Fix Rubocop rake task pattern

Author: JaniJegoroff

ios_tests/Rakefile

@@ -49,7 +49,7 @@ end
 
 desc 'Execute RuboCop static code analysis'
 RuboCop::RakeTask.new(:rubocop) do |t|
-  t.patterns = %w(lib upload)
+  t.patterns = %w(**/*.rb)
   t.options = %w(-D)
   t.fail_on_error = false
 end