Temporarily fix supplier update (#2309)

application/migrations/sqlscripts/3.2.1_to_3.3.0.sql

@@ -148,3 +148,6 @@ ALTER TABLE `ospos_expenses`
 INSERT INTO `ospos_app_config` (`key`, `value`) VALUES
   ('default_receivings_discount_type', '0'),
   ('default_receivings_discount', '0');
+
+ALTER TABLE `ospos_suppliers`
+  CHANGE COLUMN `tax_id` `tax_id` VARCHAR(32) NULL;