ubuntu20.04: update ISO URLs for 20.04.4 release
https://lists.ubuntu.com/archives/ubuntu-announce/2022-February/000277.html
Signed-off-by: Felipe Borges felipeborges@gnome.org
https://lists.ubuntu.com/archives/ubuntu-announce/2022-February/000277.html
Signed-off-by: Felipe Borges felipeborges@gnome.org