📦 Fix PHP 8.4 deprecations

Author: andrew-demb

src/Controller/GraphQL/InvalidUserPasswordException.php

@@ -8,7 +8,7 @@
 
 class InvalidUserPasswordException extends GraphQLException
 {
-    public static function create(Exception $previous = null): self
+    public static function create(?Exception $previous = null): self
     {
         return new self('The provided user / password is incorrect.', 401, $previous, ['category' => 'Security']);
     }

src/Controller/GraphQLiteController.php

@@ -48,7 +48,7 @@ class GraphQLiteController
      */
     private $httpCodeDecider;
 
-    public function __construct(ServerConfig $serverConfig, HttpMessageFactoryInterface $httpMessageFactory = null, ?int $debug = null, ?HttpCodeDeciderInterface $httpCodeDecider = null)
+    public function __construct(ServerConfig $serverConfig, ?HttpMessageFactoryInterface $httpMessageFactory = null, ?int $debug = null, ?HttpCodeDeciderInterface $httpCodeDecider = null)
     {
         $this->serverConfig = $serverConfig;
         $this->httpMessageFactory = $httpMessageFactory ?: new PsrHttpFactory(new ServerRequestFactory(), new StreamFactory(), new UploadedFileFactory(), new ResponseFactory());