完成 dict type 的单元测试

src/test/resources/sql/clean.sql

@@ -7,6 +7,7 @@ DELETE FROM "sys_dict_data";
 DELETE FROM "sys_role";
 DELETE FROM "sys_role_menu";
 DELETE FROM "sys_menu";
+DELETE FROM "sys_dict_type";
 DELETE FROM "sys_login_log";
 DELETE FROM "sys_operate_log";
 DELETE FROM "sys_user";