Update dependencies from https://github.com/dotnet/windowsdesktop build 20200901.8 (#13309)

[release/5.0.1xx] Update dependencies from dotnet/windowsdesktop
- Updates:
  - Microsoft.WindowsDesktop.App.Runtime.win-x64: from 5.0.0-rc.1.20451.7 to 5.0.0-rc.1.20451.8
  - Microsoft.WindowsDesktop.App.Ref: from 5.0.0-rc.1.20451.7 to 5.0.0-rc.1.20451.8
  - Microsoft.WindowsDesktop.App: from 5.0.0-rc.1.20451.7 to 5.0.0-rc.1.20451.8

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -105,17 +105,17 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>54e597d3a5c2b6c0e9dc556a79bba08fb0c67eb9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.WindowsDesktop.App.Runtime.win-x64" Version="5.0.0-rc.1.20451.7">
+    <Dependency Name="Microsoft.WindowsDesktop.App.Runtime.win-x64" Version="5.0.0-rc.1.20451.8">
       <Uri>https://github.com/dotnet/windowsdesktop</Uri>
-      <Sha>036dc2b705089041faadb5287a32b67924ab8533</Sha>
+      <Sha>87fcf57e1a6f89253de3620c5e9c8b738bc692b5</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.WindowsDesktop.App" Version="5.0.0-rc.1.20451.7">
+    <Dependency Name="Microsoft.WindowsDesktop.App" Version="5.0.0-rc.1.20451.8">
       <Uri>https://github.com/dotnet/windowsdesktop</Uri>
-      <Sha>036dc2b705089041faadb5287a32b67924ab8533</Sha>
+      <Sha>87fcf57e1a6f89253de3620c5e9c8b738bc692b5</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.WindowsDesktop.App.Ref" Version="5.0.0-rc.1.20451.7">
+    <Dependency Name="Microsoft.WindowsDesktop.App.Ref" Version="5.0.0-rc.1.20451.8">
       <Uri>https://github.com/dotnet/windowsdesktop</Uri>
-      <Sha>036dc2b705089041faadb5287a32b67924ab8533</Sha>
+      <Sha>87fcf57e1a6f89253de3620c5e9c8b738bc692b5</Sha>
     </Dependency>
     <Dependency Name="Microsoft.NET.Sdk.WindowsDesktop" Version="5.0.0-rc.1.20451.4" CoherentParentDependency="Microsoft.WindowsDesktop.App">
       <Uri>https://github.com/dotnet/wpf</Uri>

eng/Versions.props

@@ -131,7 +131,7 @@
   </PropertyGroup>
   <PropertyGroup>
     <!-- Dependencies from https://github.com/dotnet/windowsdesktop -->
-    <MicrosoftWindowsDesktopAppVersion>5.0.0-rc.1.20451.7</MicrosoftWindowsDesktopAppVersion>
+    <MicrosoftWindowsDesktopAppVersion>5.0.0-rc.1.20451.8</MicrosoftWindowsDesktopAppVersion>
   </PropertyGroup>
   <!-- Get .NET Framework reference assemblies from NuGet packages -->
   <PropertyGroup>