fix(deps): bump civic-cloud to v1.9.1

Picks up the cert-manager ListenerSets feature gate name fix from
upstream. v1.9.0 deployed with the wrong gate name (`ListenerSet`
singular) and cert-manager controller crash-looped on startup.

v1.9.1 has the correct name (`ListenerSets` plural).

See JarvusInnovations/cluster-template#61, civic-cloud/cluster-template#20.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: themightychris

.holo/sources/civic-cloud.toml

@@ -1,3 +1,3 @@
 [holosource]
 url = "https://github.com/civic-cloud/cluster-template"
-ref = "refs/tags/v1.9.0"
+ref = "refs/tags/v1.9.1"