Merge branch 'renovate/kube-prometheus-stack-19.x' into 'master'

Update Helm release kube-prometheus-stack to v19.0.3

See merge request openappstack/openappstack!539

flux2/apps/monitoring/kube-prometheus-stack-release.yaml

@@ -11,7 +11,7 @@ spec:
       # https://artifacthub.io/packages/helm/prometheus-community/kube-prometheus-stack
       # renovate: registryUrl=https://prometheus-community.github.io/helm-charts
       chart: kube-prometheus-stack
-      version: 19.0.2
+      version: 19.0.3
       sourceRef:
         kind: HelmRepository
         name: prometheus-community