Bump Xamarin.Android.Support.v7.MediaRouter from 23.0.1.3 to 28.0.0.3#6

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dependabot/nuget/Xamarin.Android.Support.v7.MediaRouter-28.0.0.3icebeam7/XamarinSQL:dependabot/nuget/Xamarin.Android.Support.v7.MediaRouter-28.0.0.3Copy head branch name to clipboard