libnftnl: bump for bugfixes

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42697 3c298f89-4303-0410-b956-a3cf2f4a3e73
nftables: bump for bugfixes

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42698 3c298f89-4303-0410-b956-a3cf2f4a3e73