Bump Anthropic from 11.0.0 to 12.0.1 (modelcontextprotocol#1118)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -60,7 +60,7 @@
 
   <!-- Testing dependencies -->
   <ItemGroup>
-    <PackageVersion Include="Anthropic" Version="11.0.0" />
+    <PackageVersion Include="Anthropic" Version="12.0.1" />
     <PackageVersion Include="coverlet.collector" Version="6.0.4">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>