Update year to 2022 in mruby.h
MODIFY
include/mruby.h
include/mruby.h
/*
** mruby - An embeddable Ruby implementation
**
-** Copyright (c) mruby developers 2010-2021
+** Copyright (c) mruby developers 2010-2022
**
** Permission is hereby granted, free of charge, to any person obtaining
** a copy of this software and associated documentation files (the

Update year to 2022 in mruby.h