Update License year to 2023
MODIFY
LICENSE
LICENSE
-Copyright (c) 2010-2022 mruby developers
+Copyright (c) 2010-2023 mruby developers
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),

MODIFY
include/mruby.h
include/mruby.h
/*
** mruby - An embeddable Ruby implementation
**
-** Copyright (c) mruby developers 2010-2022
+** Copyright (c) mruby developers 2010-2023
**
** Permission is hereby granted, free of charge, to any person obtaining
** a copy of this software and associated documentation files (the

Update License year to 2023