Wrong date format for List attendance periods

In the “List attendance periods” API (https://developer.personio.de/reference/get_v2-attendance-periods), the date format “2023-01-01T12:00:00Z” is listed as an example for the query parameters “updated_at.gte” and “updated_at.lte”. However, this results in an HTTP 400 error: Invalid request content, with no further explanation. The correct format is “2023-01-01T12:00:00”.