Fix Serializable deprecations triggered by token mocks

Author: derrabus

Tests/Fixtures/TokenInterface.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Fixtures;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface as BaseTokenInterface;
+
+interface TokenInterface extends BaseTokenInterface
+{
+    public function __serialize(): array;
+    public function __unserialize(array $data): void;
+}

Tests/Templating/GlobalVariablesTest.php

@@ -12,10 +12,10 @@
 namespace Symfony\Bundle\FrameworkBundle\Tests\Templating;
 
 use Symfony\Bundle\FrameworkBundle\Templating\GlobalVariables;
+use Symfony\Bundle\FrameworkBundle\Tests\Fixtures\TokenInterface;
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
-use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 
 /**