[bitnami/memcached] Fix namespace on PDB resource. (#7683)

Fixes #7682

bitnami/memcached/Chart.yaml

@@ -22,4 +22,4 @@ name: memcached
 sources:
   - https://github.com/bitnami/bitnami-docker-memcached
   - http://memcached.org/
-version: 5.15.3
+version: 5.15.4

bitnami/memcached/templates/pdb.yaml

@@ -3,6 +3,7 @@ apiVersion: policy/v1beta1
 kind: PodDisruptionBudget
 metadata:
   name: {{ include "common.names.fullname" . }}
+  namespace: {{ .Release.Namespace }}
   labels: {{- include "common.labels.standard" . | nindent 4 }}
 spec:
   {{- if .Values.podDisruptionBudget.minAvailable }}