PHP 8.4 deprecation notice

Problem/Motivation

When using the module with PHP 8.4 installed a deprecation notice is displayed:

NOTICE: PHP message: PHP Deprecated: Drupal\field_permissions\Plugin\FieldPermissionType\Manager::createInstance(): Implicitly marking parameter $field_storage as nullable is deprecated, the explicit nullable type must be used instead in field_permissions/src/Plugin/FieldPermissionType/Manager.php on line 52