Bump Anthropic.Foundry from 0.5.0 to 0.6.0 (#6057)

---
updated-dependencies:
- dependency-name: Anthropic.Foundry
  dependency-version: 0.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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dotnet/Directory.Packages.props

@@ -12,7 +12,7 @@
   <ItemGroup>
     <!-- Aspire.* -->
     <PackageVersion Include="Anthropic" Version="12.20.0" />
-    <PackageVersion Include="Anthropic.Foundry" Version="0.5.0" />
+    <PackageVersion Include="Anthropic.Foundry" Version="0.6.0" />
     <PackageVersion Include="Aspire.Hosting" Version="$(AspireAppHostSdkVersion)" />
     <PackageVersion Include="Aspire.Azure.AI.OpenAI" Version="13.0.0-preview.1.25560.3" />
     <PackageVersion Include="Aspire.Azure.AI.Inference" Version="13.1.0-preview.1.25616.3" />