feat(helm)!: Update chart kube-prometheus-stack to 67.8.0

Author: renovate[bot]

cluster/service/kubernetes/apps/observability/kube-prometheus-stack/app/helmrelease.yaml

@@ -10,7 +10,7 @@ spec:
     spec:
       interval: 15m
       chart: kube-prometheus-stack
-      version: 62.7.0
+      version: 67.8.0
       sourceRef:
         kind: HelmRepository
         name: prometheus-community