fix(k3s): add optional secret reference for password in valkey-cluster HelmRelease configuration

flux/infrastructure/infra-data/helmrelease-valkey-cluster.yaml

@@ -6,6 +6,12 @@ metadata:
 spec:
   interval: 30m
   timeout: 15m
+  valuesFrom:
+    - kind: Secret
+      name: valkey-cluster-sh
+      valuesKey: valkey-password
+      targetPath: password
+      optional: true
   chart:
     spec:
       chart: valkey-cluster