fix(08-03): add release label to ServiceMonitor for Prometheus discovery

- Prometheus serviceMonitorSelector requires 'release: kube-prometheus-stack' label
- Without this label, Prometheus doesn't discover the ServiceMonitor

helm/taskplaner/templates/servicemonitor.yaml

@@ -5,6 +5,7 @@ metadata:
   name: {{ include "taskplaner.fullname" . }}
   labels:
     {{- include "taskplaner.labels" . | nindent 4 }}
+    release: kube-prometheus-stack
 spec:
   selector:
     matchLabels: