Update dependencies from https://github.com/dotnet/source-build-reference-packages build 20240528.2 (#55946)

Microsoft.SourceBuild.Intermediate.source-build-reference-packages
 From Version 9.0.0-alpha.1.24270.1 -> To Version 9.0.0-alpha.1.24278.2

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

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -335,9 +335,9 @@
       <Sha>7e5dc8069868619c4d90b96f4e57bdef9b16c8e0</Sha>
       <SourceBuild RepoName="xdt" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="9.0.0-alpha.1.24270.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="9.0.0-alpha.1.24278.2">
       <Uri>https://github.com/dotnet/source-build-reference-packages</Uri>
-      <Sha>0df72d85186994facaefcb4eb832b8c8a8e5ae3d</Sha>
+      <Sha>87ebd07371adfe1d8140889c33da692eb2134f1a</Sha>
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
     <!-- Not updated automatically -->

eng/Versions.props

@@ -167,7 +167,7 @@
     <!-- Packages from dotnet/source-build-externals -->
     <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>9.0.0-alpha.1.24263.2</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
     <!-- Packages from dotnet/source-build-reference-packages -->
-    <MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>9.0.0-alpha.1.24270.1</MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>
+    <MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>9.0.0-alpha.1.24278.2</MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>
     <!-- Packages from dotnet/symreader -->
     <MicrosoftSourceBuildIntermediatesymreaderVersion>2.1.0-beta.24208.1</MicrosoftSourceBuildIntermediatesymreaderVersion>
     <!-- Packages from dotnet/winforms -->