Update the email address in the mailing lists if it changed

apps/registration/signals.py

@@ -1,5 +1,6 @@
 from django.contrib.auth.models import User
 
+from corres2math.lists import get_sympa_client
 from .models import AdminRegistration, Registration
 
 
@@ -17,6 +18,11 @@ def send_email_link(instance, **_):
             registration.user = instance
             registration.send_email_validation_link()
 
+            if registration.team:
+                get_sympa_client().unsubscribe(old_instance.email, f"equipe-{registration.team.trigram}", False)
+                get_sympa_client().subscribe(instance.email, f"equipe-{registration.team.trigram}", False,
+                                             f"{instance.first_name} {instance.last_name}")
+
 
 def create_admin_registration(instance, **_):
     if instance.is_superuser: