Cleared security issues.

Author: diwakar.venkatesan@syncfusion.com

HorizontalList/HorizontalList/HorizontalList.UWP/Grouping.UWP.csproj

@@ -146,7 +146,7 @@
     <PackageReference Include="Syncfusion.Xamarin.SfListView">
       <Version>16.3.0.21</Version>
     </PackageReference>
-    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.0.1" />
+    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.0.6" />
     <PackageReference Include="Xamarin.Forms">
       <Version>2.5.0.280555</Version>
     </PackageReference>