Deprecation warnings in PHP 8.4

[massa-man]

The SDK throws deprecation warnings due to "Implicitly nullable parameter declarations deprecated" in PHP 8.4. (https://php.watch/versions/8.4/implicitly-marking-parameter-type-nullable-deprecated)

An example of a warning being issued:

ErrorException: QuickBooksOnline\API\Core\HttpClients\CurlHttpClient::__construct(): Implicitly marking parameter $curl as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html/vendor/quickbooks/v3-php-sdk/src/Core/HttpClients/CurlHttpClient.php:31
Stack trace:
#0 /var/www/html/vendor/composer/ClassLoader.php(576): Spatie\Ignition\Ignition->renderError(8192, 'QuickBooksOnlin...', '/var/www/html/v...', 31)
#1 /var/www/html/vendor/composer/ClassLoader.php(576): include()
#2 /var/www/html/vendor/composer/ClassLoader.php(427): {closure:Composer\Autoload\ClassLoader::initializeIncludeClosure():575}('/var/www/html/v...')
#3 /var/www/html/vendor/quickbooks/v3-php-sdk/src/Core/HttpClients/ClientFactory.php(27): Composer\Autoload\ClassLoader->loadClass('QuickBooksOnlin...')
#4 /var/www/html/vendor/quickbooks/v3-php-sdk/src/DataService/DataService.php(217): QuickBooksOnline\API\Core\HttpClients\ClientFactory::createClient('curl')
#5 /var/www/html/vendor/quickbooks/v3-php-sdk/src/DataService/DataService.php(177): QuickBooksOnline\API\DataService\DataService->setupRestHandler(Object(QuickBooksOnline\API\Core\ServiceContext))
#6 /var/www/html/vendor/quickbooks/v3-php-sdk/src/DataService/DataService.php(165): QuickBooksOnline\API\DataService\DataService->updateServiceContextSettingsForOthers(Object(QuickBooksOnline\API\Core\ServiceContext))
#7 /var/www/html/vendor/quickbooks/v3-php-sdk/src/DataService/DataService.php(391): QuickBooksOnline\API\DataService\DataService->__construct(Object(QuickBooksOnline\API\Core\ServiceContext))
#8 QuickBooksOnline\API\DataService\DataService::Configure(Array)