RUSTSEC-2020-0016: `net2` crate has been deprecated; use `socket2` instead

[github-actions]

net2 crate has been deprecated; use socket2 instead

Details
Status	unmaintained
Package	net2
Version	0.2.37
URL	deprecrated/net2-rs@3350e38
Date	2020-05-01

The net2 crate has been deprecated
and users are encouraged to considered socket2 instead.

See advisory page for additional details.

[epage]

This is blocked on notify 5 being released