conntrack-tools: update package (along with associated libraries) to the latest version, fix musl build issues

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45077 3c298f89-4303-0410-b956-a3cf2f4a3e73