chore: LICENSE copyright owner (#1249)

- Fixes `LICENSE` copyright owner

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Signed-off-by: Jonathan Norris <[email protected]>
Co-authored-by: Lukas Reining <[email protected]>

Author: jonathannorris

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright 2025 OpenFeature Maintainers
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.