Update dependencies from https://github.com/dotnet/source-build-refer…

…ence-packages build 20240821.1 (#17589)

Microsoft.SourceBuild.Intermediate.source-build-reference-packages
 From Version 10.0.0-alpha.1.24419.1 -> To Version 10.0.0-alpha.1.24421.1

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Kevin Ransom (msft) <codecutter@hotmail.com>

eng/Version.Details.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="10.0.0-alpha.1.24419.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="10.0.0-alpha.1.24421.1">
       <Uri>https://github.com/dotnet/source-build-reference-packages</Uri>
-      <Sha>c818c3cf018e7aa9fd31f6aed5d14e9b59f03e4f</Sha>
+      <Sha>bdd698774daa248301c236f09b97015610ca2842</Sha>
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
     <!-- Intermediate is necessary for source build. -->