Update license copyright year to 2026 (#60)

## Changelog

- Update license copyright year to 2026

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LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2021-2025 Yevhen Fabizhevskyi
+Copyright (c) 2021-2026 Yevhen Fabizhevskyi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal