Fix failing tests

Author: SOHELAHMED7

src/lib/items/DbModel.php

@@ -27,8 +27,10 @@
  */
 class DbModel extends BaseObject
 {
-    // primary key attribute name
-    public string $pkName;
+    /**
+     * @var string primary key attribute name
+     */
+    public $pkName;
 
     // model name
     public string $name;

src/lib/traits/ForeignKeyConstraints.php

@@ -10,16 +10,18 @@
 trait ForeignKeyConstraints
 {
     /**
+     * @var string
      * Contains foreign key constraint
      * @example 'SET NULL'
      * @example 'CASCADE'
      */
-    public string $onDeleteFkConstraint;
+    public $onDeleteFkConstraint;
 
     /**
+     * @var string
      * Contains foreign key constraint
      * @example 'SET NULL'
      * @example 'CASCADE'
      */
-    public string $onUpdateFkConstraint;
+    public $onUpdateFkConstraint;
 }