archlinux: Update publisher-id regex
"HTTP" has been replaced by "HTTPS" ever since archlinux-2021.01.01-x86_64.iso
Signed-off-by: Felipe Borges felipeborges@gnome.org
"HTTP" has been replaced by "HTTPS" ever since archlinux-2021.01.01-x86_64.iso
Signed-off-by: Felipe Borges felipeborges@gnome.org