Update dependencies from https://github.com/dotnet/source-build-externals build 20230905.1 (#50528)

Microsoft.SourceBuild.Intermediate.source-build-externals
 From Version 8.0.0-alpha.1.23430.3 -> To Version 8.0.0-alpha.1.23455.1

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

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -189,9 +189,9 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>3c48925a6c1ab31865b4438a6cb88242d1a8fe4d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.23430.3">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.23455.1">
       <Uri>https://github.com/dotnet/source-build-externals</Uri>
-      <Sha>c88d8d75ed6b8d426b7fad50eadd7f6fec46a7e4</Sha>
+      <Sha>80d1c9575b8e2a3c4244fe042e3ee2b662b22ebe</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.SourceBuild.Intermediate.symreader" Version="2.0.0-beta-23228-03">

eng/Versions.props

@@ -162,7 +162,7 @@
     <MicrosoftDotNetBuildTasksTemplatingVersion>8.0.0-beta.23451.1</MicrosoftDotNetBuildTasksTemplatingVersion>
     <MicrosoftDotNetRemoteExecutorVersion>8.0.0-beta.23451.1</MicrosoftDotNetRemoteExecutorVersion>
     <!-- Packages from dotnet/source-build-externals -->
-    <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>8.0.0-alpha.1.23430.3</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
+    <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>8.0.0-alpha.1.23455.1</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
     <!-- Packages from dotnet/source-build-reference-packages -->
     <MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>8.0.0-alpha.1.23451.1</MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>
     <!-- Packages from dotnet/symreader -->