feat(helm): update kube-prometheus-stack ( 66.1.1 → 66.2.1 ) (#7629)

| datasource | package               | from   | to     |
| ---------- | --------------------- | ------ | ------ |
| helm       | kube-prometheus-stack | 66.1.1 | 66.2.1 |

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

kubernetes/main/apps/monitoring/kube-prometheus-stack/app/helmrelease.yaml

@@ -10,7 +10,7 @@ spec:
   chart:
     spec:
       chart: kube-prometheus-stack
-      version: 66.1.1
+      version: 66.2.1
       sourceRef:
         kind: HelmRepository
         name: prometheus-community-charts