Bump Microsoft.Extensions.Http from 9.0.1 to 10.0.3

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Http
  dependency-version: 10.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -14,7 +14,7 @@
     <!-- MCP Server (Model Context Protocol — Copilot agent mode tools) -->
     <PackageVersion Include="ModelContextProtocol" Version="0.2.0-preview.3" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="9.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Http" Version="9.0.1" />
+    <PackageVersion Include="Microsoft.Extensions.Http" Version="10.0.3" />
 
     <!-- Application -->
     <PackageVersion Include="FluentValidation" Version="11.11.0" />