add :with_user trait to fci as user_id is mandatory

spec/factories/france_connect_information.rb

@@ -6,5 +6,9 @@ FactoryBot.define do
     birthdate { '1976-02-24' }
     france_connect_particulier_id { '1234567' }
     email_france_connect { 'plip@octo.com' }
+
+    trait :with_user do
+      user { build(:user, email: email_france_connect) }
+    end
   end
 end