apps(uptime-kuma): Add patches selector

apps/uptime-kuma/app.yaml

@@ -4,11 +4,15 @@ namespace: kube-system
 metadata:
   name: uptime-kuma
 patches:
-  - patch: |-
+  - target:
+      group: helm.toolkit.fluxcd.io
+      version: v2beta1
+      kind: HelmRelease
+      name: uptime-kuma
+    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