package/openvpn: bump version to 2.6.8

Changelog:
https://github.com/OpenVPN/openvpn/blob/release/2.6/ChangeLog
https://github.com/OpenVPN/openvpn/blob/release/2.6/Changes.rst

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/openvpn/openvpn.hash

@@ -1,3 +1,3 @@
 # Locally calculated after checking signature
-sha256  ee9877340b1d8de47eb5b52712c3366855fa6a4a1955bf950c68577bd2039913  openvpn-2.6.7.tar.gz
+sha256  5ede1565c8a6d880100f7f235317a7ee9eea83d5052db5547f13a9e76af7805d  openvpn-2.6.8.tar.gz
 sha256  1fcb78d7e478bb8a9408010bdc91b36e213b1facfad093df3f7ce7e28af19043  COPYRIGHT.GPL

package/openvpn/openvpn.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-OPENVPN_VERSION = 2.6.7
+OPENVPN_VERSION = 2.6.8
 OPENVPN_SITE = https://swupdate.openvpn.net/community/releases
 OPENVPN_DEPENDENCIES = host-pkgconf libcap-ng
 OPENVPN_LICENSE = GPL-2.0