Gemfile in file_validators-2.3.0 vs Gemfile in file_validators-3.0.0.beta1

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Declare your gem's dependencies in file_validators.gemspec.
 # Bundler will treat runtime dependencies like base dependencies, and
 # development dependencies will be added by default to the :development group.