Merge branch 'main' into upgrade-rails-7-1

app/mailers/notification_mailer.rb

app/models/import.rb

app/models/user.rb

app/models/user/with_registration_context.rb

app/models/user/with_sync_between_universities.rb

...in/communication/websites/categories/_treebranch.html.erb

...ws/admin/communication/websites/categories/index.html.erb

app/views/admin/imports/show.html.erb

app/views/mailers/notifications/low_sms_credits.html.erb

app/views/mailers/notifications/new_registration.html.erb

config/locales/en.yml

config/locales/fr.yml

db/migrate/20231013090313_change_imports_user_nil.rb

db/schema.rb

test/mailers/previews/notification_mailer_preview.rb