fix: allow firstName & lastName to be nullable

Author: netbull

src/DTO/UserRepresentationDTO.php

@@ -19,8 +19,8 @@ public function __construct(
         public string $username,
         public bool $emailVerified,
         public string $name,
-        public string $firstName,
-        public string $lastName,
+        public ?string $firstName,
+        public ?string $lastName,
         public string $email,
         public ?bool $enabled,
         public ?int $createdTimestamp,
@@ -86,8 +86,8 @@ public static function fromArray(array $data, ?string $client_id = null): self
             username: $data['preferred_username'],
             emailVerified: $data['email_verified'],
             name: $data['name'],
-            firstName: $data['given_name'],
-            lastName: $data['family_name'],
+            firstName: $data['given_name'] ?? null,
+            lastName: $data['family_name'] ?? null,
             email: $data['email'],
             enabled: $data['enabled'] ?? null,
             createdTimestamp: $data['createdTimestamp'] ?? null,