Bump https-proxy-agent from 2.2.1 to 2.2.4

Bumps [https-proxy-agent](https://github.com/TooTallNate/node-https-proxy-agent) from 2.2.1 to 2.2.4.
- [Release notes](https://github.com/TooTallNate/node-https-proxy-agent/releases)
- [Commits](TooTallNate/proxy-agents@2.2.1...2.2.4)

---
updated-dependencies:
- dependency-name: https-proxy-agent
  dependency-type: indirect
...

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