cluster-config/apps/uptime-kuma/app.yaml

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: kube-system
metadata:
  name: uptime-kuma
patches:
  - patch: |-
      - op: add
        path: /spec/values/image/tag
        value: 1.23.7-debian
  - patch: |-
      - op: add
        path: /spec/chart/spec/version
        value: 1.3.3
resources:
  - app/namespace.yaml
  - app/release.yaml
  - app/route.yaml