deps: Bump ModelContextProtocol from 0.3.0-preview.3 to 0.3.0-preview.4

---
updated-dependencies:
- dependency-name: ModelContextProtocol
  dependency-version: 0.3.0-preview.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -9,7 +9,7 @@
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.8" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.8" />
     <PackageVersion Include="Microsoft.Extensions.Options" Version="9.0.8" />
-    <PackageVersion Include="ModelContextProtocol" Version="0.3.0-preview.3" />
+    <PackageVersion Include="ModelContextProtocol" Version="0.3.0-preview.4" />
     <!-- Configuration Format Support -->
     <PackageVersion Include="YamlDotNet" Version="16.3.0" />
     <PackageVersion Include="Microsoft.Extensions.Configuration.Xml" Version="9.0.8" />