chore(deps): update helm release longhorn to v1.9.1

Author: renovate[bot]

bootstrap/kubernetes-base/longhorn.tf

@@ -27,7 +27,7 @@ resource "helm_release" "longhorn" {
 
   repository = "https://charts.longhorn.io"
   chart      = "longhorn"
-  version    = "1.9.0"
+  version    = "1.9.1"
 
   namespace = "sys-longhorn"
   name      = "longhorn"