TT#124273 debian: Update copyright years

Change-Id: I183fe1d12fe08d3ec83260b187fc14c301fc7e90

debian/copyright

@@ -4,7 +4,7 @@ Upstream-Contact: Sipwise Development Team <support@sipwise.com>
 
 Files: *
 Copyright:
- Copyright © 2007-2019 Sipwise GmbH, Austria
+ Copyright © 2007-2022 Sipwise GmbH, Austria
 License: GPL-3+ with OpenSSL exception
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by