chore(license): update copyright year to 2026

Author: remarkablemark

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 Menglin "Mark" Xu <mark@remarkablemark.org>
+Copyright (c) 2026 Menglin "Mark" Xu <mark@remarkablemark.org>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal