fix: conditionally render insecureSkipTLSVerify in APIService template

Only render insecureSkipTLSVerify field when true to prevent GitOps sync
drift. Kubernetes omits this field when false (API default), causing
ArgoCD to show resources as OutOfSync.

Author: pawl

charts/metrics-server/templates/apiservice.yaml

@@ -61,7 +61,9 @@ spec:
   {{- end }}
   group: metrics.k8s.io
   groupPriorityMinimum: 100
+  {{- if .Values.apiService.insecureSkipTLSVerify }}
   insecureSkipTLSVerify: {{ .Values.apiService.insecureSkipTLSVerify }}
+  {{- end }}
   service:
     name: {{ include "metrics-server.fullname" . }}
     namespace: {{ .Release.Namespace }}