[stable/cerebro] add conditional ingress apiVersion to replace to-be-deprecated extensions/v1beta1 (#22629)

Signed-off-by: Cameron Attard <cameron.attard@siteminder.com>

stable/cerebro/Chart.yaml

@@ -1,5 +1,5 @@
 name: cerebro
-version: 1.8.1
+version: 1.8.2
 appVersion: 0.9.0
 apiVersion: v1
 description: A Helm chart for Cerebro - a web admin tool that replaces Kopf.

stable/cerebro/templates/ingress.yaml

@@ -1,7 +1,7 @@
 {{- if .Values.ingress.enabled -}}
 {{- $fullName := include "cerebro.fullname" . -}}
 {{- $ingressPath := .Values.ingress.path -}}
-apiVersion: extensions/v1beta1
+apiVersion: {{- if .Capabilities.APIVersions.Has "networking.k8s.io/v1beta1" }} networking.k8s.io/v1beta1 {{- else }} extensions/v1beta1 {{- end }}
 kind: Ingress
 metadata:
   name: {{ $fullName }}