Bump xml2js, @azure/ms-rest-js and @azure/core-http (#93)

Bumps [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js), [@azure/ms-rest-js](https://github.com/Azure/ms-rest-js) and [@azure/core-http](https://github.com/Azure/azure-sdk-for-js). These dependencies needed to be updated together.

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

Updates `@azure/ms-rest-js` from 2.6.4 to 2.6.6
- [Release notes](https://github.com/Azure/ms-rest-js/releases)
- [Changelog](https://github.com/Azure/ms-rest-js/blob/master/Changelog.md)
- [Commits](https://github.com/Azure/ms-rest-js/commits)

Updates `@azure/core-http` from 3.0.0 to 3.0.1
- [Release notes](https://github.com/Azure/azure-sdk-for-js/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-js/blob/main/documentation/Changelog-for-next-generation.md)
- [Commits](https://github.com/Azure/azure-sdk-for-js/compare/@azure/core-http_3.0.0...@azure/core-http_3.0.1)

---
updated-dependencies:
- dependency-name: xml2js
  dependency-type: indirect
- dependency-name: "@azure/ms-rest-js"
  dependency-type: indirect
- dependency-name: "@azure/core-http"
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>