Taxonomy terms have been revisionable for quite some time now. If you take a look at the change records, you'll see that several years have passed since terms began supporting revisions.
The only issue was that Drupal core did not provide a User Interface (UI) for managing these revisions. However, this changes with the release of Drupal version 10.3, where a user interface for revision management has finally been introduced.
Change record: https://www.drupal.org/node/3396786
Drupal 10.3.0 is scheduled for release in the week of June 17, 2024.