PHP 7.3 reaches end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in April 2022. You may want to consider planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.
Quote
Purpose of module
Deployment
System requirements
The Magento_Quote module does not have any specific system requirements.
Install
The Magento_Quote module is installed automatically (using the native Magento install mechanism) without any additional actions.