[bitnami/postgresql] Fix port used by backup's CronJob (#19517)

Signed-off-by: Bruno Melo <bsilva.melo@gmail.com>

bitnami/postgresql/Chart.yaml

@@ -35,4 +35,4 @@ maintainers:
 name: postgresql
 sources:
 - https://github.com/bitnami/charts/tree/main/bitnami/postgresql
-version: 12.12.9
+version: 12.12.10

bitnami/postgresql/templates/backup/cronjob.yaml

@@ -66,7 +66,7 @@ spec:
               - name: PGHOST
                 value: {{ include "postgresql.v1.primary.fullname" . }}
               - name: PGPORT
-                value: {{ .Values.containerPorts.postgresql | quote }}
+                value: {{ include "postgresql.v1.service.port" . | quote }}
               - name: PGDUMP_DIR
                 value: {{ .Values.backup.cronjob.storage.mountPath }}
               {{- if .Values.tls.enabled }}