Checkmk Werk 13275: API: fix update host tag group endpoint to return correct status code

ID: 13275 Title: API: fix update host tag group endpoint to return correct status code Component: REST API Level: 1 Class: Bug fix Version: 2.1.0i1 In the previous version, the host tag group update endpoint returned a 500 error status code when the user attempted to update a group which was included by other entities, such as a host, without providing the repair parameter.