Bump xml2js and homebridge

Bumps [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js) to 0.5.0 and updates ancestor dependency [homebridge](https://github.com/homebridge/homebridge). These dependencies need to be updated together.


Updates `xml2js` from 0.4.23 to 0.5.0
- [Commits](https://github.com/Leonidas-from-XIV/node-xml2js/commits/0.5.0)

Updates `homebridge` from 1.4.0 to 1.7.0
- [Release notes](https://github.com/homebridge/homebridge/releases)
- [Changelog](https://github.com/homebridge/homebridge/blob/latest/CHANGELOG.md)
- [Commits](homebridge/homebridge@v1.4.0...v1.7.0)

---
updated-dependencies:
- dependency-name: xml2js
  dependency-type: indirect
- dependency-name: homebridge
  dependency-type: direct:development
...

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