Error when installing on PHP 8.4

[lincowj]

Description
The bug occurs because, in PHP 8.4, the ability to implicitly mark a typed variable as null is deprecated.

Steps to Reproduce

1. Install the module on Magento 2.4.8 using PHP 8.4
2. Run bin/magento setup:upgrade

Expected Behavior
The setup must run smoothly.

Actual Behavior
The following error is thrown:

Deprecated Functionality: Intelipost\Shipping\Helper\Data::saveResultQuotes(): Implicitly marking parameter $data as nullable is deprecated, the explicit nullable type must be used instead in .../vendor/intelipost/magento2/Helper/Data.php on line 336

Environment

• Magento Version: 2.4.8-p1
• PHP Version: 8.4
• Operating System: Ubuntu
• Browser (if applicable):
• Module Version: 2.9.1
• Other Relevant Extensions: