Merged PR 39077: [internal/release/7.0.1xx] Updated NuGet.config - ad…

…d feed for msbuild-Trusted-a400405

Updated NuGet.config - add feed for msbuild-Trusted-a400405

NuGet.config

@@ -38,6 +38,7 @@
     <add key="dotnet7" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet7/nuget/v3/index.json" />
     <add key="dotnet7-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet7-transport/nuget/v3/index.json" />
     <add key="dotnet-libraries" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-libraries/nuget/v3/index.json" />
+    <add key="darc-pub-DotNet-msbuild-Trusted-a400405" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-a400405b/nuget/v3/index.json" />
     <!-- Temporary feed for Xamarin workload manifest -->
     <add key="xamarin" value="https://pkgs.dev.azure.com/azure-public/vside/_packaging/xamarin-impl/nuget/v3/index.json" />
   </packageSources>