[bitnami/mariadb-galera] Do not hardcode PDB apiVersion (#9086)

bitnami/mariadb-galera/Chart.yaml

@@ -27,4 +27,4 @@ sources:
   - https://github.com/bitnami/bitnami-docker-mariadb-galera
   - https://github.com/prometheus/mysqld_exporter
   - https://mariadb.org
-version: 7.0.1
+version: 7.0.2

bitnami/mariadb-galera/templates/pdb.yaml

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