Bump xml2js and aws-sdk in /audiomix

Bumps [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js) to 0.5.0 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 0.5.0
- [Release notes](https://github.com/Leonidas-from-XIV/node-xml2js/releases)
- [Commits](Leonidas-from-XIV/node-xml2js@0.4.19...0.5.0)

Updates `aws-sdk` from 2.814.0 to 2.1359.0
- [Release notes](https://github.com/aws/aws-sdk-js/releases)
- [Changelog](https://github.com/aws/aws-sdk-js/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-js@v2.814.0...v2.1359.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

audiomix/package-lock.json

@@ -9,7 +9,7 @@
   "author": "Matt Cliff",
   "license": "MIT",
   "dependencies": {
-    "aws-sdk": "^2.814.0",
+    "aws-sdk": "^2.1359.0",
     "request": "^2.87.0",
     "tempy": "^0.2.1"
   }