Merged PR 49638: [internal/release/9.0.1xx] - Updated NuGet.config - replace msbuild feed

Updated NuGet.config -  replace msbuild feed

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#### AI description  (iteration 1)
#### PR Classification
Configuration update to replace a package source in `NuGet.config`.

#### PR Summary
This pull request updates the `NuGet.config` file to replace an existing msbuild feed with a new one.
- `NuGet.config`: Added a new package source key `darc-int-DotNet-msbuild-Trusted-933b72e`.
<!-- GitOpsUserAgent=GitOps.Apps.Server.pullrequestcopilot -->

Author: vseanreesermsft

NuGet.config

@@ -34,6 +34,7 @@
     <add key="darc-int-dotnet-aspnetcore-ed74665" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-aspnetcore-ed74665e/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-aspnetcore -->
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
+    <add key="darc-int-DotNet-msbuild-Trusted-933b72e" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-DotNet-msbuild-Trusted-933b72e3/nuget/v3/index.json" />
     <add key="darc-int-DotNet-msbuild-Trusted-13c590f" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-DotNet-msbuild-Trusted-13c590f8/nuget/v3/index.json" />
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--  Begin: Package sources from dotnet-roslyn-analyzers -->
@@ -86,6 +87,7 @@
     <!--  Begin: Package sources from dotnet-aspnetcore -->
     <add key="darc-int-dotnet-aspnetcore-ed74665" value="true" />
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
+    <add key="darc-int-DotNet-msbuild-Trusted-933b72e" value="true" />
     <add key="darc-int-DotNet-msbuild-Trusted-13c590f" value="true" />
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--  End: Package sources from dotnet-aspnetcore -->