package/openvpn: bump version to 2.4.8

Changelog:
https://github.com/OpenVPN/openvpn/commit/3976acda9bf10b5e62375b66ee42d85eda08fbcf#diff-8ca39f14de952fe02a97ac77c27eab25

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/openvpn/openvpn.hash

@@ -1,3 +1,3 @@
 # Locally calculated after checking signature
-sha256 a42f53570f669eaf10af68e98d65b531015ff9e12be7a62d9269ea684652f648  openvpn-2.4.7.tar.xz
+sha256 fb8ca66bb7807fff595fbdf2a0afd085c02a6aa47715c9aa3171002f9f1a3f91  openvpn-2.4.8.tar.xz
 sha256 1fcb78d7e478bb8a9408010bdc91b36e213b1facfad093df3f7ce7e28af19043  COPYRIGHT.GPL

package/openvpn/openvpn.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-OPENVPN_VERSION = 2.4.7
+OPENVPN_VERSION = 2.4.8
 OPENVPN_SOURCE = openvpn-$(OPENVPN_VERSION).tar.xz
 OPENVPN_SITE = http://swupdate.openvpn.net/community/releases
 OPENVPN_DEPENDENCIES = host-pkgconf openssl