Update README.md

remove deprecated Serializable interface

README.md

@@ -108,4 +108,4 @@ To configure keycloak to work with this bundle, [here](./Resources/docs/keycloak
 | V1.0.1                                                | >=4.0.0   <5.0.0   |
 | V1.1.* (uses old authentication systeme with guard)   | >=5.0.0   <6.0.0   |
 | V1.2.* (uses new authentication systeme)              | >=5.3.0   <6.0.0   |
-| V1.3.*                                                | =6.0.*             |
+| V1.3.*                                                | >=6.0.0   <7.0.0   |

Security/User/KeycloakBearerUser.php

@@ -6,7 +6,7 @@ namespace ABEL\Bundle\keycloakBearerOnlyAdapterBundle\Security\User;
 
 use Symfony\Component\Security\Core\User\UserInterface;
 
-class KeycloakBearerUser implements UserInterface, \Serializable
+class KeycloakBearerUser implements UserInterface
 {
     /**
      * @var string
@@ -270,7 +270,7 @@ class KeycloakBearerUser implements UserInterface, \Serializable
      * @return string the string representation of the object or null
      * @since 5.1.0
      */
-    public function serialize()
+    public function __serialize()
     {
         return serialize(array(
             $this->sub,
@@ -293,7 +293,7 @@ class KeycloakBearerUser implements UserInterface, \Serializable
      * @return void
      * @since 5.1.0
      */
-    public function unserialize($serialized)
+    public function __unserialize($serialized)
     {
         list (
             $this->sub,