Merge pull request #1616 from AtCoder-NoviSteps/#1615

📖 Update License (#1615)

Author: KATO-Hiro

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2023 - 2024 AtCoder NoviSteps
+Copyright (c) 2023 - 2025 AtCoder NoviSteps
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal