Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-winforms build 20231120.12

Microsoft.Dotnet.WinForms.ProjectTemplates , Microsoft.Private.Winforms
 From Version 6.0.25-servicing.23519.16 -> To Version 6.0.26-servicing.23570.12

Author: dotnet-bot

NuGet.config

@@ -5,9 +5,6 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-492abbe" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-runtime-492abbee/nuget/v3/index.json" />
-    <add key="darc-int-dotnet-runtime-492abbe-2" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-runtime-492abbee-2/nuget/v3/index.json" />
-    <add key="darc-int-dotnet-runtime-492abbe-1" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-runtime-492abbee-1/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
@@ -21,9 +18,6 @@
   <disabledPackageSources>
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-492abbe-1" value="true" />
-    <add key="darc-int-dotnet-runtime-492abbe-2" value="true" />
-    <add key="darc-int-dotnet-runtime-492abbe" value="true" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
   </disabledPackageSources>

eng/Version.Details.xml

@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.Private.Winforms" Version="6.0.26-servicing.23564.8">
+    <Dependency Name="Microsoft.Private.Winforms" Version="6.0.26-servicing.23570.12">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-winforms</Uri>
-      <Sha>71d565cffc00261dbbcb267a7536f0223e965c31</Sha>
+      <Sha>9d8a2005af012ecce74899ccfdd69114897aba3a</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Dotnet.WinForms.ProjectTemplates" Version="6.0.26-servicing.23564.8">
+    <Dependency Name="Microsoft.Dotnet.WinForms.ProjectTemplates" Version="6.0.26-servicing.23570.12">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-winforms</Uri>
-      <Sha>71d565cffc00261dbbcb267a7536f0223e965c31</Sha>
+      <Sha>9d8a2005af012ecce74899ccfdd69114897aba3a</Sha>
     </Dependency>
     <Dependency Name="System.CodeDom" Version="6.0.0" CoherentParentDependency="Microsoft.Private.Winforms">
       <Uri>https://github.com/dotnet/runtime</Uri>

eng/Versions.props

@@ -26,7 +26,7 @@
   </PropertyGroup>
   <!-- NuGet Package Versions -->
   <PropertyGroup>
-    <MicrosoftPrivateWinformsVersion>6.0.26-servicing.23564.8</MicrosoftPrivateWinformsVersion>
+    <MicrosoftPrivateWinformsVersion>6.0.26-servicing.23570.12</MicrosoftPrivateWinformsVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/coreclr -->
   <PropertyGroup>