Deprecated function: Return type of Amazon\ProductAdvertisingAPI\v1\com\amazon\paapi5\v1\VariationAttribute::offsetGet($offset)

[mfrosch]

On PHP 8.1 the following deprecated message is currently sent:

Deprecated function: Return type of Amazon\ProductAdvertisingAPI\v1\com\amazon\paapi5\v1\VariationAttribute::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include() (line 30 of vendor/traydigita/paapi5-php-sdk/src/com/amazon/paapi5/v1/VariationAttribute.php)