Migrate from lockbox to ActiveRecord encryption (1/2)

spec/factories/users.rb

@@ -6,6 +6,6 @@ FactoryBot.define do
     email { "jimmy@example.com" }
     password { "dis-muh-password" }
     confirmed_at { DateTime.now }
-    ln_account { "123456" }
+    lndhub_username { "123456" }
   end
 end