update deps

[xenoterracide]

cool stuff, maybe update the deps though?

❯ npm install -g proxy-pac-proxy

changed 168 packages, and audited 169 packages in 3s

15 vulnerabilities (7 moderate, 3 high, 5 critical)

To address issues that do not require attention, run:
  npm audit fix

To address all issues (including breaking changes), run:
  npm audit fix --force

Run `npm audit` for details.

also bluebird is "dead" (native promises), not sure if async is needed anymore either...