Update dependencies from https://github.com/dotnet/source-build-externals build 20250402.2

Microsoft.SourceBuild.Intermediate.source-build-externals
 From Version 8.0.0-alpha.1.25104.1 -> To Version 8.0.0-alpha.1.25202.2

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -349,9 +349,9 @@
       <Sha>02fe27cd6a9b001c8feb7938e6ef4b3799745759</Sha>
       <SourceBuild RepoName="command-line-api" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.25104.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.25202.2">
       <Uri>https://github.com/dotnet/source-build-externals</Uri>
-      <Sha>dc30cd1ec22f198d658e011c14525d4d65873991</Sha>
+      <Sha>16bcad1c13be082bd52ce178896d1119a73081a9</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="8.0.0-alpha.1.25163.2">