[master] Update dependencies from dotnet/winforms (#2027)

* Update dependencies from https://github.com/dotnet/winforms build 20191008.7

- Microsoft.Private.Winforms - 5.0.0-alpha1.19508.7

* Update dependencies from https://github.com/dotnet/winforms build 20191009.1

- Microsoft.Private.Winforms - 5.0.0-alpha1.19509.1

* Update dependencies from https://github.com/dotnet/winforms build 20191009.2

- Microsoft.Private.Winforms - 5.0.0-alpha1.19509.2

* Dependency coherency updates

- Microsoft.NETCore.App - 5.0.0-alpha1.19508.9 (parent: Microsoft.Private.Winforms)

eng/Version.Details.xml

 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.Private.Winforms" Version="5.0.0-alpha1.19508.10">
+    <Dependency Name="Microsoft.Private.Winforms" Version="5.0.0-alpha1.19509.2">
       <Uri>https://github.com/dotnet/winforms</Uri>
-      <Sha>69b4c34baf55d992f0a9c8888043748c73f496a1</Sha>
+      <Sha>6b988939f84529130e7a811598ba25237a5f2de2</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
@@ -59,9 +59,9 @@
       <Uri>https://github.com/dotnet/corefx</Uri>
       <Sha>a434a52ae3f1175bc1cad8b1a02b0921ef3b1f55</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App" Version="5.0.0-alpha1.19507.10" CoherentParentDependency="Microsoft.Private.Winforms">
+    <Dependency Name="Microsoft.NETCore.App" Version="5.0.0-alpha1.19508.9" CoherentParentDependency="Microsoft.Private.Winforms">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>57ba280ee32511c6f5c2ebcd2bfaaf4a1db74648</Sha>
+      <Sha>5491acd84b92034d5d53e226682f053a7b376ad9</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19461.7">
       <Uri>https://github.com/dotnet/arcade</Uri>

eng/Versions.props

@@ -8,7 +8,7 @@
   </PropertyGroup>
   <!-- NuGet Package Versions -->
   <PropertyGroup>
-    <MicrosoftPrivateWinformsVersion>5.0.0-alpha1.19508.10</MicrosoftPrivateWinformsVersion>
+    <MicrosoftPrivateWinformsVersion>5.0.0-alpha1.19509.2</MicrosoftPrivateWinformsVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/coreclr -->
   <PropertyGroup>
@@ -18,7 +18,7 @@
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/core-setup -->
   <PropertyGroup>
-    <MicrosoftNETCoreAppVersion>5.0.0-alpha1.19507.10</MicrosoftNETCoreAppVersion>
+    <MicrosoftNETCoreAppVersion>5.0.0-alpha1.19508.9</MicrosoftNETCoreAppVersion>
     <MicrosoftNETCorePlatformsVersion>5.0.0-alpha1.19504.7</MicrosoftNETCorePlatformsVersion>
     <SystemDrawingCommonVersion>5.0.0-alpha1.19504.7</SystemDrawingCommonVersion>
     <SystemDirectoryServicesVersion>5.0.0-alpha1.19504.7</SystemDirectoryServicesVersion>