[bitnami/mariadb] Fix ServiceMonitor namespace value reference (#20971)

Signed-off-by: Zakhar Petrov <46595458+zakhar-petrov@users.noreply.github.com>

bitnami/mariadb/Chart.yaml

@@ -34,4 +34,4 @@ maintainers:
 name: mariadb
 sources:
 - https://github.com/bitnami/charts/tree/main/bitnami/mariadb
-version: 14.1.2
+version: 14.1.3

bitnami/mariadb/templates/servicemonitor.yaml

@@ -8,7 +8,7 @@ apiVersion: monitoring.coreos.com/v1
 kind: ServiceMonitor
 metadata:
   name: {{ include "common.names.fullname" . }}
-  namespace: {{ default .Release.Namespace .Values.metrics.prometheusRule.namespace | quote }}
+  namespace: {{ default .Release.Namespace .Values.metrics.serviceMonitor.namespace | quote }}
   {{- $labels := include "common.tplvalues.merge" ( dict "values" ( list .Values.metrics.serviceMonitor.labels .Values.commonLabels ) "context" . ) }}
   labels: {{- include "common.labels.standard" ( dict "customLabels" $labels "context" $ ) | nindent 4 }}
   {{- if .Values.commonAnnotations }}