PHP 8.4 deprecated notices

[jeabakker]

PHP Deprecated:  GO\Scheduler::run(): Implicitly marking parameter $runTime as nullable is deprecated, the explicit nullable type must be used instead in vendor/peppeocchi/php-cron-scheduler/src/GO/Scheduler.php on line 166
PHP Deprecated:  GO\Job::isDue(): Implicitly marking parameter $date as nullable is deprecated, the explicit nullable type must be used instead in vendor/peppeocchi/php-cron-scheduler/src/GO/Job.php on line 196
PHP Deprecated:  GO\Job::onlyOne(): Implicitly marking parameter $whenOverlapping as nullable is deprecated, the explicit nullable type must be used instead in vendor/peppeocchi/php-cron-scheduler/src/GO/Job.php on line 260