PHP 7.2 compatibility patch for mdmsoft/yii2-admin 2.8

patch

diff --git a/components/Configs.php b/components/Configs.php
index b6cf6ce..3a210ee 100644
--- a/components/Configs.php
+++ b/components/Configs.php
@@ -39,7 +39,7 @@ use yii\rbac\ManagerInterface;
  * @author Misbahul D Munir <misbahuldmunir@gmail.com>
  * @since 1.0
  */
-class Configs extends \yii\base\Object
+class Configs extends \yii\base\BaseObject
 {
     const CACHE_TAG = 'mdm.admin';
 
diff --git a/models/Assignment.php b/models/Assignment.php
index 50b156a..89b9e91 100644
--- a/models/Assignment.php
+++ b/models/Assignment.php
@@ -5,7 +5,7 @@ namespace mdm\admin\models;
 use mdm\admin\components\Configs;
 use mdm\admin\components\Helper;
 use Yii;
-use yii\base\Object;
+use yii\base\BaseObject;
 
 /**
  * Description of Assignment
@@ -13,7 +13,7 @@ use yii\base\Object;
  * @author Misbahul D Munir <misbahuldmunir@gmail.com>
  * @since 2.5
  */
-class Assignment extends Object
+class Assignment extends BaseObject
 {
     /**
      * @var integer User id
diff --git a/models/Route.php b/models/Route.php
index ccc160c..607a6ef 100644
--- a/models/Route.php
+++ b/models/Route.php
@@ -16,7 +16,7 @@ use yii\helpers\VarDumper;
  * @author Misbahul D Munir <misbahuldmunir@gmail.com>
  * @since 1.0
  */
-class Route extends \yii\base\Object
+class Route extends \yii\base\BaseObject
 {
     const CACHE_TAG = 'mdm.admin.route';