Bump xml2js and aws-sdk (#8)

Bumps [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js) to 0.6.2 and updates ancestor dependency [aws-sdk](https://github.com/aws/aws-sdk-js). These dependencies need to be updated together.


Updates `xml2js` from 0.4.19 to 0.6.2
- [Commits](Leonidas-from-XIV/node-xml2js@0.4.19...0.6.2)

Updates `aws-sdk` from 2.814.0 to 2.1692.0
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Commits](aws/aws-sdk-js@v2.814.0...v2.1692.0)

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

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