chore(deps): bump appium-ios-device from 2.7.8 to 2.7.9

Bumps [appium-ios-device](https://github.com/appium/appium-ios-device) from 2.7.8 to 2.7.9.
- [Release notes](https://github.com/appium/appium-ios-device/releases)
- [Changelog](https://github.com/appium/appium-ios-device/blob/master/CHANGELOG.md)
- [Commits](appium/appium-ios-device@v2.7.8...v2.7.9)

---
updated-dependencies:
- dependency-name: appium-ios-device
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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