Update dependencies from https://github.com/dotnet/source-build-externals build 20221006.1

Microsoft.SourceBuild.Intermediate.source-build-externals
 From Version 8.0.0-alpha.1.22463.4 -> To Version 8.0.0-alpha.1.22506.1

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.22463.4">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.22506.1">
       <Uri>https://github.com/dotnet/source-build-externals</Uri>
-      <Sha>4663cca8b51b481bfd5e82695d2027d05688b5de</Sha>
+      <Sha>886a1d848ecb98df94d1c9b326e33e41729a6503</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="8.0.0-alpha.1.22480.1">