Bring in latest version of sdk extras

[jamesmontemagno]

A cleanup to bring in latest SDKExtras for VS 2019 16.1.3 compat

[ghost]

Docs Build status updates of commit d9e2bbb:

✅ Validation status: passed

File	Status	Preview URL	Details
DeviceTests/DeviceTests.Android/DeviceTests.Android.csproj	✅Succeeded
DeviceTests/DeviceTests.Android/Resources/Resource.designer.cs	✅Succeeded
DeviceTests/DeviceTests.Shared/DeviceTests.Shared.csproj	✅Succeeded
Xamarin.Essentials.sln	✅Succeeded
Xamarin.Essentials/Vibration/Vibration.uwp.cs	✅Succeeded
Xamarin.Essentials/Xamarin.Essentials.csproj	✅Succeeded
docs/en/FrameworksIndex/xamarin-essentials-android.xml	✅Succeeded
docs/en/FrameworksIndex/xamarin-essentials-ios.xml	✅Succeeded
docs/en/FrameworksIndex/xamarin-essentials-uwp.xml	✅Succeeded
docs/en/Xamarin.Essentials/ColorExtensions.xml	✅Succeeded
docs/en/Xamarin.Essentials/PointExtensions.xml	✅Succeeded
docs/en/Xamarin.Essentials/RectangleExtensions.xml	✅Succeeded
docs/en/Xamarin.Essentials/SizeExtensions.xml	✅Succeeded
nuget.config	✅Succeeded

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.