[bitnami/keycloak] Do not hardcode PDB apiVersion (#9097)

bitnami/keycloak/Chart.yaml

@@ -26,4 +26,4 @@ name: keycloak
 sources:
   - https://github.com/bitnami/bitnami-docker-keycloak
   - https://github.com/keycloak/keycloak
-version: 6.1.5
+version: 6.1.6

bitnami/keycloak/templates/pdb.yaml

@@ -1,5 +1,5 @@
 {{- if .Values.pdb.create }}
-apiVersion: policy/v1beta1
+apiVersion: {{ include "common.capabilities.policy.apiVersion" . }}
 kind: PodDisruptionBudget
 metadata:
   name: {{ template "keycloak.fullname" . }}