package/gnupg2: bump to version 2.4.3
See release announce:
https://lists.gnupg.org/pipermail/gnupg-announce/2023q3/000480.html
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 8f1418b5dd80809dc90196d967d8d9665b794c8e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>