Bump the system group with 1 update

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

- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v7.0.0...v8.0.0)

---
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]>

Author: dependabot[bot]

src/dotnet-nugetize/dotnet-nugetize.csproj

@@ -31,7 +31,7 @@
     <PackageReference Include="ThisAssembly.Project" Version="1.4.1" PrivateAssets="all" />
     <PackageReference Include="ThisAssembly.Strings" Version="1.4.1" PrivateAssets="all" />
     <PackageReference Include="Devlooped.SponsorLink" Version="0.10.5" />
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="7.0.0" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="8.0.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" />
   </ItemGroup>