fix: update copyright year to 2026 (#32)

Committed-By-Agent: claude

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: jagtejsodhi

LICENSE

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