Google has announced the v24 release of the Google Ads API, which introduces several new features for conversion tracking.
To utilize the new features, advertisers must upgrade their client libraries and code.
Version 24 adds support for Conversions with Cart Data, unlocking advanced metrics like average cart size and revenue per transaction, along with other new features.

Advertisers can join a live walkthrough event on April 23rd at 10 AM ET to learn more about the implementation of these updates.
Find the announcement and registration link in the official article: Announcing v24 of the Google Ads API.