Uses the frozen_string_literal magic comment (will be the default in Ruby 3)

spec/app/finders/medias/attachment_brute_forcing_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe WPScan::Finders::Medias::AttachmentBruteForcing do
   subject(:finder) { described_class.new(target) }
   let(:target)     { WPScan::Target.new(url) }