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	0.2.34
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.

[notheotherben]

This looks like it's a tokio 0.2 dependency right now - so we'll need to wait until they update it.

Crate:  net2
Title:  `net2` crate has been deprecated; use `socket2` instead
Date:   2020-05-01
URL:    https://rustsec.org/advisories/RUSTSEC-2020-0016
Dependency tree:
net2 0.2.34
├── miow 0.2.1
└── mio 0.6.22
    ├── yup-hyper-mock 4.0.0
    │   └── git-tool 0.2.0
    ├── tokio 0.2.21
    │   ├── yup-hyper-mock 4.0.0
    │   ├── tokio-util 0.3.1
    │   │   └── h2 0.2.5
    │   │       └── hyper 0.13.6
    │   │           ├── yup-hyper-mock 4.0.0
    │   │           ├── reqwest 0.10.6
    │   │           │   └── sentry 0.19.0
    │   │           │       └── git-tool 0.2.0
    │   │           ├── hyper-tls 0.4.1
    │   │           │   ├── reqwest 0.10.6
    │   │           │   └── git-tool 0.2.0
    │   │           └── git-tool 0.2.0
    │   ├── tokio-tls 0.3.1
    │   │   ├── reqwest 0.10.6
    │   │   └── hyper-tls 0.4.1
    │   ├── reqwest 0.10.6
    │   ├── hyper-tls 0.4.1
    │   ├── hyper 0.13.6
    │   ├── h2 0.2.5
    │   └── git-tool 0.2.0
    ├── mio-uds 0.6.8
    │   └── tokio 0.2.21
    └── mio-named-pipes 0.1.7
        └── tokio 0.2.21