Update to SHA256 certificate

Author: heaths

src/VSSetup.PowerShell/VSSetup.PowerShell.csproj

@@ -117,7 +117,7 @@
   <Target Name="PopulateFilesToSign" AfterTargets="AfterBuild" BeforeTargets="SignFiles">
     <ItemGroup>
       <FilesToSign Include="$(TargetPath)">
-        <Authenticode>Microsoft</Authenticode>
+        <Authenticode>Microsoft400</Authenticode>
       </FilesToSign>
       <FilesToSign Include="$(TargetDir)\*.ps1xml;$(TargetDir)\*.psd1;$(TargetDir)\*.psm1">
         <Authenticode>Microsoft400</Authenticode>
@@ -126,4 +126,4 @@
   </Target>
   <Import Project="..\..\packages\MicroBuild.Core.0.3.0\build\MicroBuild.Core.targets" Condition="Exists('..\..\packages\MicroBuild.Core.0.3.0\build\MicroBuild.Core.targets')" />
   <Import Project="..\..\packages\Nerdbank.GitVersioning.2.3.38\build\Nerdbank.GitVersioning.targets" Condition="Exists('..\..\packages\Nerdbank.GitVersioning.2.3.38\build\Nerdbank.GitVersioning.targets')" />
-</Project>
+</Project>