docs(license): update copyright year(s) (#651)

Co-authored-by: github-actions <github-actions@github.com>

Author: github-actions[bot]

LICENSE

@@ -1,7 +1,7 @@
 
 The MIT License (MIT)
 
-Copyright (c) 2019-2024 Yuki Yamazaki
+Copyright (c) 2019-2025 Yuki Yamazaki
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal