Bump Xamarin.Essentials from 1.6.1 to 1.7.0

Bumps [Xamarin.Essentials](https://github.com/xamarin/Essentials) from 1.6.1 to 1.7.0.
- [Release notes](https://github.com/xamarin/Essentials/releases)
- [Commits](https://github.com/xamarin/Essentials/compare/1.6.1...1.7.0

)

---
updated-dependencies:
- dependency-name: Xamarin.Essentials
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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