TT#124273 Update packaging for bullseye

- Switch to debhelper compat level 13.
- Switch to Standards-Version 4.5.1.
- Update copyright years.

Change-Id: I7ba828f3702665ef94efcca448ccee5e720ee89d

debian/control

@@ -3,9 +3,9 @@ Section: web
 Priority: optional
 Maintainer: Sipwise Development Team <support@sipwise.com>
 Homepage: https://www.sipwise.com/
-Standards-Version: 3.9.8
+Standards-Version: 4.5.1
 Build-Depends:
- debhelper-compat (= 12),
+ debhelper-compat (= 13),
  yarnpkg | nodejs (>= 12.19.0~),
  yarnpkg | yarn,
 

debian/copyright

@@ -4,7 +4,7 @@ Upstream-Contact: Sipwise Development Team <support@sipwise.com>
 
 Files: *
 Copyright:
- Copyright © 2016-2019 Sipwise GmbH, Austria
+ Copyright © 2016-2021 Sipwise GmbH, Austria
 License: GPL-3+
  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