[mod] Upgrade morgan, seedrandom, socks-proxy, tail dependencies:

- CVE from GitHub:
- https://github.com/duniter/duniter/network/alert/yarn.lock/morgan/open
- https://github.com/expressjs/morgan/blob/master/HISTORY.md#191--2018-09-10

- out of date from https://david-dm.org/duniter/duniter:
- seedrandom: https://www.npmjs.com/package/seedrandom#version-notes
- https://github.com/TooTallNate/node-socks-proxy-agent/commits/master
- tail: https://github.com/lucagrulla/node-tail/releases