Update dependencies from https://github.com/dotnet/source-build-reference-packages build 20260403.3

On relative base path root
Microsoft.SourceBuild.Intermediate.source-build-reference-packages From Version 8.0.0-alpha.1.26152.2 -> To Version 8.0.0-alpha.1.26203.3

Author: dotnet-maestro[bot]

NuGet.config

@@ -7,21 +7,16 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-emsdk -->
-    <add key="darc-pub-dotnet-emsdk-badf9f9" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-badf9f97/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-emsdk -->
     <!--  Begin: Package sources from dotnet-aspnetcore -->
-    <add key="darc-int-dotnet-aspnetcore-ef18546" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-aspnetcore-ef18546e/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-aspnetcore -->
     <!--  Begin: Package sources from dotnet-windowsdesktop -->
-    <add key="darc-int-dotnet-windowsdesktop-a84eb47" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-windowsdesktop-a84eb47b/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-windowsdesktop -->
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-b753199" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-runtime-b7531990/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--  Begin: Package sources from dotnet-sdk -->
-    <add key="darc-int-dotnet-sdk-9c30042" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/darc-int-dotnet-sdk-9c300427/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-sdk -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
@@ -40,18 +35,14 @@
   <disabledPackageSources>
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-aspnetcore -->
-    <add key="darc-int-dotnet-aspnetcore-ef18546" value="true" />
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--  End: Package sources from dotnet-aspnetcore -->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-b753199" value="true" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--  Begin: Package sources from dotnet-sdk -->
-    <add key="darc-int-dotnet-sdk-9c30042" value="true" />
     <!--  End: Package sources from dotnet-sdk -->
     <!--  Begin: Package sources from dotnet-windowsdesktop -->
-    <add key="darc-int-dotnet-windowsdesktop-a84eb47" value="true" />
     <!--  End: Package sources from dotnet-windowsdesktop -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
   </disabledPackageSources>

eng/Version.Details.xml

@@ -243,9 +243,9 @@
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-runtime</Uri>
       <Sha>81cabf2857a01351e5ab578947c7403a5b128ad1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="8.0.0-alpha.1.26152.2">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="8.0.0-alpha.1.26203.3">
       <Uri>https://github.com/dotnet/source-build-reference-packages</Uri>
-      <Sha>ac35a502714f4867b0386a5bd392868024e7495c</Sha>
+      <Sha>9d83c59ff890ff2020aa38ebcf3bb514e38e9ffe</Sha>
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XliffTasks" Version="1.0.0-beta.23475.1" CoherentParentDependency="Microsoft.DotNet.Arcade.Sdk">