Bump copyright year

Author: horgh

Diff for: README.md

@@ -5,7 +5,7 @@ This repository contains the spec for that format as well as test databases.
 
 # Copyright and License
 
-This software is Copyright (c) 2013 - 2024 by MaxMind, Inc.
+This software is Copyright (c) 2013 - 2025 by MaxMind, Inc.
 
 This is free software, licensed under the [Apache License, Version
 2.0](LICENSE-APACHE) or the [MIT License](LICENSE-MIT), at your option.