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

…nals build 20231002.1 (#92935)

Microsoft.SourceBuild.Intermediate.source-build-externals
 From Version 8.0.0-alpha.1.23475.1 -> To Version 8.0.0-alpha.1.23502.1

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

eng/Version.Details.xml

@@ -100,9 +100,9 @@
       <Sha>7b55da982fc6e71c1776c4de89111aee0eecb45a</Sha>
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.23475.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.23502.1">
       <Uri>https://github.com/dotnet/source-build-externals</Uri>
-      <Sha>e04156dbe14f882a80d4499dbebd45ab156b6c3c</Sha>
+      <Sha>ed17956dbc31097b7ba6a66be086f4a70a97d84f</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
   </ProductDependencies>