service.rb in cistern-2.8.1

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 RSpec.configure do |config|
   config.before(:each) {
     Object.send(:remove_const, :Sample) if Object.constants.include?(:Sample)
     class Sample; include Cistern::Client; end
   }