fix: use kubeversion to determine PDB apiVersion

Author: Koronei

traefik/templates/poddisruptionbudget.yaml

@@ -1,9 +1,5 @@
 {{- if .Values.podDisruptionBudget.enabled -}}
-{{- if .Capabilities.APIVersions.Has "policy/v1/PodDisruptionBudget" }}
 apiVersion: policy/v1
-{{- else }}
-apiVersion: policy/v1beta1
-{{- end }}
 kind: PodDisruptionBudget
 metadata:
   name: {{ template "traefik.fullname" . }}