Fix iptables 1.8.9 unknown option error on OpenWrt 23.05
xt_wgobfs has an issue with iptables 1.8.9, which was fixed in #15 but has not been previously packaged for OpenWrt.
xt_wgobfs has an issue with iptables 1.8.9, which was fixed in #15 but has not been previously packaged for OpenWrt.