fix(helm): update chart grafana to 8.5.4

kubernetes/main/apps/monitoring/grafana/helm-release.yaml

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: grafana
-      version: "8.5.2"
+      version: "8.5.4"
       sourceRef:
         kind: HelmRepository
         name: grafana-charts

kubernetes/main/core/longhorn/kustomization.yaml

@@ -5,4 +5,5 @@ resources:
 - ./helm-repository.yaml
 - ./helm-release.yaml
 - ./alerts.yaml
-- ./service-monitor.yaml
+- ./service-monitor.yaml
+- ./snapshot-class.yaml

kubernetes/main/core/longhorn/snapshot-class.yaml

@@ -0,0 +1,7 @@
+# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/snapshot.storage.k8s.io/volumesnapshotclass_v1.json
+kind: VolumeSnapshotClass
+apiVersion: snapshot.storage.k8s.io/v1
+metadata:
+  name: longhorn
+driver: driver.longhorn.io
+deletionPolicy: Delete

kubernetes/thin/apps/monitoring/grafana/app/helm-release.yaml

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: grafana
-      version: "8.5.2"
+      version: "8.5.4"
       sourceRef:
         kind: HelmRepository
         name: grafana