Update dependencies from https://github.com/dotnet/winforms build 20191023.2 (#2104)

- Microsoft.Private.Winforms - 4.8.1-preview1.19523.2

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.Private.Winforms" Version="4.8.1-preview1.19517.7">
+    <Dependency Name="Microsoft.Private.Winforms" Version="4.8.1-preview1.19523.2">
       <Uri>https://github.com/dotnet/winforms</Uri>
-      <Sha>ef0fdeda487deb05f2864f11e97f047ed8620e9c</Sha>
+      <Sha>fb02fe818f8b410259776e4fa6ca0c5cdd43e07c</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>

eng/Versions.props

@@ -10,7 +10,7 @@
   </PropertyGroup>
   <!-- NuGet Package Versions -->
   <PropertyGroup>
-    <MicrosoftPrivateWinformsVersion>4.8.1-preview1.19517.7</MicrosoftPrivateWinformsVersion>
+    <MicrosoftPrivateWinformsVersion>4.8.1-preview1.19523.2</MicrosoftPrivateWinformsVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/coreclr -->
   <PropertyGroup>