[bitnami/wordpress] Do not hardcode PDB apiVersion (#9120)

bitnami/wordpress/Chart.yaml

@@ -35,4 +35,4 @@ name: wordpress
 sources:
   - https://github.com/bitnami/bitnami-docker-wordpress
   - https://wordpress.org/
-version: 13.0.12
+version: 13.0.13

bitnami/wordpress/templates/pdb.yaml

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