Use if-addrs instead of local_ip_address

[macladson]

Proposed Changes

Swaps out the local_ip_address dependency for if-addrs. The reason for this is that is that local_ip_address is a relatively heavy dependency (depends on neli) compared to if-addrs and we only use it to check the presence of an IPv6 interface. This is an experiment to see if we can use the more lightweight if-addrs instead.

Additional Info

Note that the older if-addrs version 0.10 exists in our Cargo.lock as an optional dependency of if-watch but we do not actually compile it

[macladson]

After talking to @jxs, I'm going to try to see if we can use if-watch directly here instead

[mergify]

This pull request has merge conflicts. Could you please resolve them @macladson? 🙏

[macladson]

@jxs what do you think about merging this one? I've pretty much given up on #8662 but feel free to play around with it if you think it's worth it