Update dependencies from https://github.com/dotnet/winforms build 20190702.2 (#1145)

- Microsoft.Private.Winforms - 4.8.0-preview7.19352.2

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="4.8.0-preview7.19351.1">
+    <Dependency Name="Microsoft.Private.Winforms" Version="4.8.0-preview7.19352.2">
       <Uri>https://github.com/dotnet/winforms</Uri>
-      <Sha>1869f7d2f30fafc9c4c2a8f092294227c10e280f</Sha>
+      <Sha>52be7e5282560d26926a288d75a8489cd856ec4a</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>

eng/Versions.props

@@ -8,7 +8,7 @@
   </PropertyGroup>
   <!-- NuGet Package Versions -->
   <PropertyGroup>
-    <MicrosoftPrivateWinformsVersion>4.8.0-preview7.19351.1</MicrosoftPrivateWinformsVersion>
+    <MicrosoftPrivateWinformsVersion>4.8.0-preview7.19352.2</MicrosoftPrivateWinformsVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/coreclr -->
   <PropertyGroup>