Update dependencies from...

Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int build 20230816.3 (#8107)

[release/8.0] Update dependencies from dnceng/internal/dotnet-wpf-int

eng/Version.Details.xml

@@ -21,9 +21,9 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>1eb702ce1efe3581488a37704cee47603a291069</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="8.0.0-rc.1.23368.2">
+    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="9.0.0-alpha.1.23416.3">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int</Uri>
-      <Sha>8fd21692fdf495c9d20e8a25d27ee0952f085dc4</Sha>
+      <Sha>c2949aa87899a201627589ddafbc385d63b6ab2e</Sha>
     </Dependency>
     <Dependency Name="System.Resources.Extensions" Version="8.0.0-rc.1.23415.2" CoherentParentDependency="Microsoft.Private.Winforms">
       <Uri>https://github.com/dotnet/runtime</Uri>

eng/Versions.props

@@ -97,6 +97,6 @@
     <SystemReflectionMetadataLoadContextPackage>System.Reflection.MetadataLoadContext</SystemReflectionMetadataLoadContextPackage>
   </PropertyGroup>
   <PropertyGroup>
-    <MicrosoftDotNetWpfDncEngVersion>8.0.0-rc.1.23368.2</MicrosoftDotNetWpfDncEngVersion>
+    <MicrosoftDotNetWpfDncEngVersion>9.0.0-alpha.1.23416.3</MicrosoftDotNetWpfDncEngVersion>
   </PropertyGroup>
 </Project>