It seems like there is a conflict with versions of iptables-libs, I’m not sure how to solve it precisely but you can try clearing yum cache using yum clean all then running yum update again.
You can also try running yum list installed iptables\* to view what is currently installed and conflicts with what you want to install, remove if possible, then install the desired versions.
Hopefully this is helpful, I’ll admit I haven’t messed around with yum that much lately.