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

…nals build 20240415.1 (dotnet#101119)

Microsoft.SourceBuild.Intermediate.source-build-externals
 From Version 9.0.0-alpha.1.24211.1 -> To Version 9.0.0-alpha.1.24215.1

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

eng/Version.Details.xml

@@ -85,9 +85,9 @@
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="9.0.0-alpha.1.24211.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="9.0.0-alpha.1.24215.1">
       <Uri>https://github.com/dotnet/source-build-externals</Uri>
-      <Sha>83566118e44922c30d146654d42c7c3745cc119d</Sha>
+      <Sha>f4e750201aaf6bad67391a52e8138bbd7abe3019</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
   </ProductDependencies>