package/ed: bump to version 1.20
See release announce:
https://lists.gnu.org/archive/html/bug-ed/2024-01/msg00000.html
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 2a8b8e13062029ebfc1d4e43b789c5eb186bc36b)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>