upgrade rook to v1.15.9

argocd/applications.yaml

@@ -429,7 +429,7 @@ spec:
   project: default
   sources:
   - repoURL: https://charts.rook.io/release
-    targetRevision: '1.14.12'
+    targetRevision: '1.15.9'
     chart: rook-ceph
     helm:
       valueFiles: