Merge pull request #12635 from mperham/4-0-stable

Allow any version of BCrypt

activemodel/lib/active_model/secure_password.rb

@@ -46,7 +46,6 @@ def has_secure_password(options = {})
         # This is to avoid ActiveModel (and by extension the entire framework)
         # being dependent on a binary library.
         begin
-          gem 'bcrypt-ruby', '~> 3.1.2'
           require 'bcrypt'
         rescue LoadError
           $stderr.puts "You don't have bcrypt-ruby installed in your application. Please add it to your Gemfile and run bundle install"