Zulip auth backends configured redundantly
In flux2/apps/zulip/zulip-values-configmap.yaml
there are ZULIP_AUTH_BACKENDS
and SETTING_AUTHENTICATION_BACKENDS
set in the environment -
the former seems to be both set to the wrong value and superfluous,
as nothing the like is mentioned in the docs:
https://zulip.readthedocs.io/en/latest/production/authentication-methods.html