[9.x] Mailable Priority Error

[giggsey]

• Laravel Version: 9.0.1
• PHP Version: 8.0.14

Description:

Mailable->priority() errors when being sent

Current:

    public function priority($level = 3)
    {
        $this->callbacks[] = function ($message) use ($level) {
            $message->setPriority($level);
        };

        return $this;
    }

Symfony Email class doesn't have setPriority, but instead priority function.