make returned pi emails actually a list

shared/workspaces/workspaces/notification/services/notification_service.py

@@ -126,7 +126,7 @@ class NotificationServiceRESTClient(NotificationServiceIF):
         requests.post(
             f"{self.url}/notify/ingested_email/send",
             json={
-                "destination_email": list(contacts.decode()),
+                "destination_email": json.loads(contacts.decode()),
                 "request_id": request.id,
                 "capability_name": request.capability.name,
                 "qa": notes,