Change copyright year to "present" in LICENSE.md

Just like godotengine/godot#70885 did for the main Godot repository.

LICENSE.md

@@ -1,5 +1,5 @@
-Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. \
-Copyright (c) 2014-2022 Godot Engine contributors.
+Copyright (c) 2014-present Godot Engine contributors. \
+Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the