Rakefile in soapy_cake-1.21.0 vs Rakefile in soapy_cake-1.22.0

@@ -1,4 +1,5 @@
+# frozen_string_literal: true
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
 require 'rubocop-ci'
 
 RSpec::Core::RakeTask.new(:spec)