Update LICENSE (#56)

* Update LICENSE

* Update copyright holder in LICENSE file

Author: alex-rawlings-yyc

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright © <year> <copyright_holder_name>
+Copyright © 2026 SIL Global.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal