chore(deps): update helm release kube-prometheus-stack to v81.6.9

Author: renovate[bot]

charts/harmony-chart/Chart.lock

@@ -22,7 +22,7 @@ dependencies:
   version: 1.0.8
 - name: kube-prometheus-stack
   repository: https://prometheus-community.github.io/helm-charts
-  version: 81.0.1
+  version: 81.6.9
 - name: kubernetes-dashboard
   repository: https://kubernetes-retired.github.io/dashboard
   version: 7.14.0
@@ -32,5 +32,5 @@ dependencies:
 - name: vector
   repository: https://helm.vector.dev
   version: 0.50.0
-digest: sha256:0c9ece5b8130e4536ab5357e0b08dfdb1448365138796990a6b3ff7957d64f02
-generated: "2026-02-19T17:01:07.30458+04:00"
+digest: sha256:e3a4593934bdee80ee243ea736071972a1d4443de21d8feb862812d524dc13e9
+generated: "2026-03-13T17:40:05.016232025Z"

charts/harmony-chart/Chart.yaml

@@ -55,7 +55,7 @@ dependencies:
 
   - name: kube-prometheus-stack
     alias: prometheusstack
-    version: "81.0.1"
+    version: "81.6.9"
     condition: prometheusstack.enabled
     repository: https://prometheus-community.github.io/helm-charts