Bump to 4.6-SR1

Author: davidbritch

UserInterface/SystemThemesDemo/SystemThemesDemo.Android/SystemThemesDemo.Android.csproj

@@ -53,7 +53,7 @@
     <Reference Include="System.Numerics.Vectors" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.726" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.772" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="MainActivity.cs" />

UserInterface/SystemThemesDemo/SystemThemesDemo.iOS/SystemThemesDemo.iOS.csproj

@@ -123,7 +123,7 @@
     <Reference Include="System.Numerics.Vectors" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.726" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.772" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
   <ItemGroup>

UserInterface/SystemThemesDemo/SystemThemesDemo/MainPage.xaml

@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="4.6.0.726" />
+    <PackageReference Include="Xamarin.Forms" Version="4.6.0.772" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Images\" />