Update dependencies from https://github.com/dotnet/source-build-reference-packages build 20251021.3 (#392)

[release/9.0] Update dependencies from dotnet/source-build-reference-packages

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -2,9 +2,9 @@
 <Dependencies>
   <ProductDependencies>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="9.0.0-alpha.1.25517.3">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="9.0.0-alpha.1.25521.3">
       <Uri>https://github.com/dotnet/source-build-reference-packages</Uri>
-      <Sha>2621104ca7f734b64166a4eb3cf4927166b82da9</Sha>
+      <Sha>a9cadb09ddcc99b1e535efb0648047634f0c4f40</Sha>
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
   </ProductDependencies>