package/vnstat: bump version to 2.6

Changelog: https://humdi.net/vnstat/CHANGES

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit e4b188e1d40f99cf66eb5690a9edcc90b1c693d1)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/vnstat/vnstat.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256 a0955999abd56d5463d257ffdccc9b1e9ad9ea504de81e64ba4c197f1245abaa  vnstat-2.4.tar.gz
+sha256 89276e0a7281943edb554b874078278ad947dc312938a2451e03eb80679f7ff7  vnstat-2.6.tar.gz
 sha256 8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING

package/vnstat/vnstat.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-VNSTAT_VERSION = 2.4
+VNSTAT_VERSION = 2.6
 VNSTAT_SITE = http://humdi.net/vnstat
 VNSTAT_LICENSE = GPL-2.0
 VNSTAT_LICENSE_FILES = COPYING