[dep] Upgrade packages to remove ip dependency

[Drarig29]

What and why?

Fixes https://github.com/DataDog/datadog-ci/security/dependabot/38
Fixes #1188

This PR upgrades 4 packages to get rid of the ip dependency, which is vulnerable.

How?

yarn set resolution pac-resolver@npm:^7.0.0 7.0.1
yarn set resolution node-gyp@npm:latest 10.0.1
yarn set resolution socks@npm:^2.7.1 2.7.3

and set "proxy-agent": "^6.4.0" in package.json + remove a few outdated resolutions in package.json

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)