build(deps): bump @xmldom/xmldom in /appium

Bumps  and [@xmldom/xmldom](https://github.com/xmldom/xmldom). These dependencies needed to be updated together.

Updates `@xmldom/xmldom` from 0.9.8 to 0.9.9
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](xmldom/xmldom@0.9.8...0.9.9)

Updates `@xmldom/xmldom` from 0.8.11 to 0.8.12
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](xmldom/xmldom@0.9.8...0.9.9)

---
updated-dependencies:
- dependency-name: "@xmldom/xmldom"
  dependency-version: 0.9.9
  dependency-type: indirect
- dependency-name: "@xmldom/xmldom"
  dependency-version: 0.8.12
  dependency-type: indirect
...

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Author: dependabot[bot]