fix NoneType

This needs to be an array, otherwise the ansible playbook fails.

Signed-off-by: Felix Kronlage-Dammers <fkr@hazardous.org>

Author: fkr

orgs/SovereignCloudStack/data.yaml

@@ -345,6 +345,7 @@ teams:
     description: "Colleagues from Zendis"
     privacy: closed
     maintainer:
+      []
     member:
       - thorsten-frlncr
       - dominikkaminski