package/openvpn: bump version to 2.4.5

Changelog: https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24

This bump depends on libressl 2.7.2 to avoid a build error with this
defconfig:

BR2_PACKAGE_LIBRESSL=y
BR2_PACKAGE_OPENVPN=y

Added license hash.

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

package/openvpn/openvpn.hash

@@ -1,2 +1,3 @@
 # Locally calculated after checking signature
-sha256 96cd1b8fe1e8cb2920f07c3fd3985faea756e16fdeebd11d3e146d5bd2b04a80  openvpn-2.4.4.tar.xz
+sha256 43c0a363a332350f620d1cd93bb431e082bedbc93d4fb872f758650d53c1d29e  openvpn-2.4.5.tar.xz
+sha256 1fcb78d7e478bb8a9408010bdc91b36e213b1facfad093df3f7ce7e28af19043  COPYRIGHT.GPL

package/openvpn/openvpn.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-OPENVPN_VERSION = 2.4.4
+OPENVPN_VERSION = 2.4.5
 OPENVPN_SOURCE = openvpn-$(OPENVPN_VERSION).tar.xz
 OPENVPN_SITE = http://swupdate.openvpn.net/community/releases
 OPENVPN_DEPENDENCIES = host-pkgconf openssl