Fix: copy & paste error in helm chart secret template

if redis.auth.enabled was true, the chart did not render successfully.

helm/core-ui-middleware/templates/redis-secret.yaml

@@ -7,5 +7,5 @@ type: Opaque
 data:
   username: {{ .Values.redis.auth.username | b64enc | quote }}
   password: {{ .Values.redis.auth.password | b64enc | quote }}
-  ca.crt: {{ .Values.redis.auth.ca | b64enc | quote }}
+  ca.crt: {{ .Values.redis.tls.ca | b64enc | quote }}
 {{- end -}}