docs(LICENSE): Update copyright year(s) (#1188)

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

Author: doistbot

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2022-2025 Doist Inc.
+Copyright (c) 2022-2026 Doist Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal