.Net: Update to latest mcp package (#12673)

Author: SergeyMenshykh

dotnet/Directory.Packages.props

@@ -65,7 +65,7 @@
     <PackageVersion Include="Microsoft.SemanticKernel.Core" Version="1.58.0" />
     <PackageVersion Include="Microsoft.SemanticKernel.Planners.OpenAI" Version="1.47.0-preview" />
     <PackageVersion Include="Microsoft.VisualStudio.Threading" Version="17.12.19" />
-    <PackageVersion Include="ModelContextProtocol" Version="0.3.0-preview.1" />
+    <PackageVersion Include="ModelContextProtocol" Version="0.3.0-preview.2" />
     <PackageVersion Include="MSTest.TestFramework" Version="3.8.0" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageVersion Include="Npgsql" Version="8.0.7" />