Update README copyright

Author: albin-mullvad

README.md

@@ -398,7 +398,7 @@ more about them in the [audits readme](./audits/README.md).
 
 # License
 
-Copyright (C) 2022  Mullvad VPN AB
+Copyright (C) 2024  Mullvad VPN AB
 
 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 the Free Software Foundation, either version 3 of