Laravel-Excel: [Bug]: Compatible error with Psr\SimpleCache\CacheInterface::get

Is the bug applicable and reproducable to the latest version of the package and hasn’t it been reported before?

• Yes, it’s still reproducable

What version of Laravel Excel are you using?

^3.1

What version of Laravel are you using?

9.31

What version of PHP are you using?

8.1

Describe your issue

Running composer update returns the following error

> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
PHP Fatal error:  Declaration of Maatwebsite\Excel\Cache\MemoryCache::get($key, $default = null) must be compatible with Psr\SimpleCache\CacheInterface::get(string $key, mixed $default = null): mixed in /var/www/html/vendor/maatwebsite/excel/src/Cache/MemoryCache.php on line 62

   Symfony\Component\ErrorHandler\Error\FatalError 

  Declaration of Maatwebsite\Excel\Cache\MemoryCache::get($key, $default = null) must be compatible with Psr\SimpleCache\CacheInterface::get(string $key, mixed $default = null): mixed

  at vendor/maatwebsite/excel/src/Cache/MemoryCache.php:62
     58▕ 
     59▕     /**
     60▕      * {@inheritdoc}
     61▕      */
  ➜  62▕     public function get($key, $default = null)
     63▕     {
     64▕         if ($this->has($key)) {
     65▕             return $this->cache[$key];
     66▕         }

How can the issue be reproduced?

composer update

What should be the expected behaviour?

update function