package/openvpn: security bump version to 2.4.9
Changelog:
https://github.com/OpenVPN/openvpn/blob/release/2.4/ChangeLog
Fixes CVE-2020-11810.
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit d9045f2596cdd6a9c18e6f4dd629a914a75cee53)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>