fix(deps): [security] bump https-proxy-agent from 2.1.1 to 2.2.1
fix(deps): [security] bump https-proxy-agent from 2.1.1 to 2.2.1

Bumps [https-proxy-agent](https://github.com/TooTallNate/node-https-proxy-agent) from 2.1.1 to 2.2.1. **This update includes security fixes.**
- [Release notes](https://github.com/TooTallNate/node-https-proxy-agent/releases)
- [Changelog](https://github.com/TooTallNate/node-https-proxy-agent/blob/master/History.md)
- [Commits](https://github.com/TooTallNate/node-https-proxy-agent/compare/2.1.1...2.2.1)
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