package/libva-utils: bump version to 2.20.0

Release notes:
https://github.com/intel/libva-utils/blob/v2.20-branch/NEWS

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2 files changed