package/vnstat: bump to version 2.8

https://github.com/vergoh/vnstat/releases/tag/v2.8

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/vnstat/vnstat.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  4c28a1d8bc03c2b6e7ab96c876e07dd8ea174b7cad73b7190ecb2b9501e83e9e  vnstat-2.7.tar.gz
+sha256  03f858a7abf6bd85bb8cd595f3541fc3bd31f8f400ec092ef3034825ccb77c25  vnstat-2.8.tar.gz
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING

package/vnstat/vnstat.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-VNSTAT_VERSION = 2.7
+VNSTAT_VERSION = 2.8
 VNSTAT_SITE = http://humdi.net/vnstat
 VNSTAT_LICENSE = GPL-2.0
 VNSTAT_LICENSE_FILES = COPYING