update longhorn to 1.6.1

Author: jemand771

_infrastructure/longhorn/kustomization.yaml

@@ -2,7 +2,7 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 namespace: longhorn-system
 resources:
-  - https://raw.githubusercontent.com/longhorn/longhorn/v1.6.0/deploy/longhorn.yaml
+  - https://raw.githubusercontent.com/longhorn/longhorn/v1.6.1/deploy/longhorn.yaml
   - backups.yaml
   - backup-box.yaml
   - backup-box-aws.yaml