package/samba4: bump version to 4.20.5
Release notes:
https://www.samba.org/samba/history/samba-4.20.5.html
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit b52c204e6f108949f88d35cdb0d26b21668b47f3)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>