Kimai: Teamlead authorization bypass in GET /api/timesheets allows reading other users' timesheet records without being teamlead of the target

Summary GET /api/timesheets?user= and users= returns the targeted user's timesheet records to any caller that has the viewothertimesheet permission, without verifying that the caller is teamlead of any team containing the target user. The per-record endpoint GET /api/timesheets/id correctly...