protocol: Update copyright date in limine.h
diff --git a/limine.h b/limine.h
index 365de87e..13688842 100644
--- a/limine.h
+++ b/limine.h
@@ -1,6 +1,6 @@
/* BSD Zero Clause License */
-/* Copyright (C) 2022 mintsuki and contributors.
+/* Copyright (C) 2022-2023 mintsuki and contributors.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
