message: periodic billing - new invoice notification
diff: @@ -415,6 +415,8 @@ export default class StripeBillingIntegration extends BillingIntegration {
  billingInvoice = await this.synchronizeAsBillingInvoice(billingInvoice.invoiceID, false);
  await StripeHelpers.updateInvoiceAdditionalData(this.tenantID, billingInvoice, operationResult);
  + // Send a notification to the user
  + void this.sendInvoiceNotification(billingInvoice);
  return billingInvoice;
  }
  