Update the copyrights

debian/copyright

 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: dwarf2sources
-Source: https://gitlab.apertis.org/pkg/development/dwarf2sources
+Source: https://gitlab.apertis.org/pkg/dwarf2sources
 
 Files: *
 Copyright:
@@ -8,17 +8,19 @@ Copyright:
   2016-2019 Philip Craig <philipjcraig@gmail.com>
   2016 The rust-dwarf Developers
   2020 Sjoerd Simons <sjoerd@collabora.com>
-License: Apache-2.0 or MIT
+License: Apache-2.0 or Expat
 
 Files: debian/*
-Copyright: 2020 Sjoerd Simons <sjoerd@collabora.com>
-License: Apache-2.0 or MIT
+Copyright:
+ 2020 Sjoerd Simons <sjoerd@collabora.com>
+ 2020 Andrej Shadura <andrewsh@debian.org>
+License: Apache-2.0 or Expat
 
 License: Apache-2.0
  Debian systems provide the Apache 2.0 license in
  /usr/share/common-licenses/Apache-2.0
 
-License: MIT
+License: Expat
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights