Update Helm release kube-prometheus-stack to v68.2.2

Author: renovate[bot]

clusters/talos-robbinsdale/apps/monitoring/kustomization.yaml

@@ -4,7 +4,7 @@ kind: Kustomization
 helmCharts:
   - name: kube-prometheus-stack
     repo: https://prometheus-community.github.io/helm-charts
-    version: 68.2.1
+    version: 68.2.2
     namespace: monitoring
     releaseName: kube-prometheus-stack
     includeCRDs: true