The API version selector in Workbench UI had been blocked on API v58.0 since end of 2023 (the API v59.0, matching the Winter’24 release update, and following, were not considered).
Workbench UI has been updated on mid December 2024, to fit the gap of the versions of all release updates that have occurred since then.
You can now choose up to v62.0 API version, when using this tool.
Thanks to the Workbench team for the update !