add main window

LewS · LewS · commit 169fb015504a · 2021-08-18T11:00:10.000+10:00
diff --git a/aurora-postgres.cfndsl.rb b/aurora-postgres.cfndsl.rb
@@ -91,6 +91,7 @@
     Engine 'aurora-postgresql'
     EngineVersion engine_version if defined? engine_version
     AutoMinorVersionUpgrade minor_upgrade if defined? minor_upgrade
+    PreferredMaintenanceWindow maint_window if defined? maint_window
     PubliclyAccessible 'false'
     DBInstanceClass Ref(:WriterInstanceType)
     Tags aurora_tags
