Bump System.Net.Http.WinHttpHandler in the system group

Bumps the system group with 1 update: [System.Net.Http.WinHttpHandler](https://github.com/dotnet/runtime).


Updates `System.Net.Http.WinHttpHandler` from 8.0.1 to 9.0.0
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.1...v9.0.0)

---
updated-dependencies:
- dependency-name: System.Net.Http.WinHttpHandler
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: system
...

Signed-off-by: dependabot[bot] <[email protected]>

src/dotnet-nugetize/dotnet-nugetize.csproj

@@ -29,7 +29,7 @@
     <PackageReference Include="ThisAssembly.Project" Version="1.5.0" PrivateAssets="all" />
     <PackageReference Include="ThisAssembly.Strings" Version="1.5.0" PrivateAssets="all" />
     <PackageReference Include="Devlooped.SponsorLink" Version="0.10.5" />
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="8.0.1" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="9.0.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" />
   </ItemGroup>