auth_site.rb in jekyll-auth-2.1.1

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 class JekyllAuth
   class AuthSite < Sinatra::Base
     configure :production do
       require "rack-ssl-enforcer"
       use Rack::SslEnforcer if JekyllAuth.ssl?