package/gnupg2: bump to version 2.4.7
See release announce:
https://lists.gnupg.org/pipermail/gnupg-announce/2024q4/000487.html
Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
[Julien: add release announce link]
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 8e00663624a3c5f2603c54af62efecd6f25874ad)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>