Merge branch 'hotfix/nullable-token' into 'main'

fix: nullable access token

See merge request internal/oauth2-client-php!12

src/AuthServiceUser.php

@@ -125,7 +125,7 @@ public function setRoles(array $roles): static
         $this->roles = $roles;
         return $this;
     }
-    public function setAccessToken(AccessTokenInterface $token): static
+    public function setAccessToken(?AccessTokenInterface $token): static
     {
         $this->token = $token;
         return $this;