iso-codes: upgrade from 4.19.0 to 4.20.1

iso-codes: upgrade from 4.19.0 to 4.20.1

Changes:
https://salsa.debian.org/iso-codes-team/iso-codes/-/blob/main/CHANGELOG.md

License-Update: update license to LGPL-2.1-or-later.

The build system is switched from autotools to meson. Note that
meson is now the only supported build system for iso-codes.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>