build(deps): bump AngleSharp.Css from 0.16.3 to 0.16.4

Bumps [AngleSharp.Css](https://github.com/AngleSharp/AngleSharp.Css) from 0.16.3 to 0.16.4.
- [Release notes](https://github.com/AngleSharp/AngleSharp.Css/releases)
- [Commits](AngleSharp/AngleSharp.Css@v0.16.3...v0.16.4)

---
updated-dependencies:
- dependency-name: AngleSharp.Css
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/bunit.web/bunit.web.csproj

@@ -16,7 +16,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="AngleSharp" Version="0.16.1" />
-		<PackageReference Include="AngleSharp.Css" Version="0.16.3" />
+		<PackageReference Include="AngleSharp.Css" Version="0.16.4" />
 		<PackageReference Include="AngleSharp.Diffing" Version="0.17.0" />
 		<PackageReference Include="AngleSharp.Wrappers" Version="2.0.0" />
 		<PackageReference Include="Nerdbank.GitVersioning" Version="3.4.255" PrivateAssets="All" />