Include Devise::Test::ControllerHelpers

`Devise::Test::Helpers` is deprecated

Author: tvdeyen

spec/rails_helper.rb

@@ -31,7 +31,7 @@
 RSpec.configure do |config|
   config.infer_spec_type_from_file_location!
   config.use_transactional_fixtures = true
-  config.include Devise::TestHelpers, type: :controller
+  config.include Devise::Test::ControllerHelpers, type: :controller
   config.include Alchemy::Engine.routes.url_helpers
   config.include Alchemy::TestSupport::ConfigStubbing
   config.include FactoryBot::Syntax::Methods