Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int build 20191029.6 (dotnet#2137)

- Microsoft.DotNet.Wpf.DncEng - 5.0.0-alpha.1.19529.6

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -75,9 +75,9 @@
       <Uri>https://github.com/dotnet/corefx</Uri>
       <Sha>a434a52ae3f1175bc1cad8b1a02b0921ef3b1f55</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="5.0.0-alpha.1.19528.8">
+    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="5.0.0-alpha.1.19529.6">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int</Uri>
-      <Sha>6df4e166de5383d0963a643c92bae5140fbadea4</Sha>
+      <Sha>67c8bdb62139962b2a1b4a1a1102c67cd22b9ea1</Sha>
     </Dependency>
     <Dependency Name="System.IO.Packaging" Version="5.0.0-alpha1.19504.7" CoherentParentDependency="Microsoft.NETCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>

eng/Versions.props

@@ -113,6 +113,6 @@
       It is worth reiterating that this package *should not* be consumed to build the product.
   -->
   <PropertyGroup>
-    <MicrosoftDotNetWpfDncEngVersion>5.0.0-alpha.1.19528.8</MicrosoftDotNetWpfDncEngVersion>
+    <MicrosoftDotNetWpfDncEngVersion>5.0.0-alpha.1.19529.6</MicrosoftDotNetWpfDncEngVersion>
   </PropertyGroup>
 </Project>