fix tests that now requir an admin user to have a strong password

spec/factories/administrateur.rb

@@ -3,7 +3,7 @@ FactoryBot.define do
   factory :administrateur do
     transient do
       email { generate(:administrateur_email) }
-      password { 'mon chien aime les bananes' }
+      password { 'Mon [hien 4im3 {es banane$' }
     end
 
     initialize_with do

spec/factories/user.rb

@@ -8,5 +8,9 @@ FactoryBot.define do
     trait :unconfirmed do
       confirmed_at { nil }
     end
+
+    trait :with_strong_password do
+      password { '{my-%s3cure[]-p4$$w0rd' }
+    end
   end
 end