Upgrade morgan, seedrandom, socks-proxy, and 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• out of date from https://david-dm.org/duniter/duniter: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