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

Author: renovate[bot]

cluster-wide-apps/longhorn.yaml

@@ -9,7 +9,7 @@ spec:
   sources:
     - chart: longhorn
       repoURL: https://charts.longhorn.io/
-      targetRevision: 1.8.1
+      targetRevision: 1.9.1
       helm:
         valueFiles:
         - $values/cluster-wide-k8s/longhorn/values.yaml