Bump xunit from 2.3.1 to 2.4.1

Bumps [xunit](https://github.com/xunit/xunit) from 2.3.1 to 2.4.1.
- [Release notes](https://github.com/xunit/xunit/releases)
- [Commits](xunit/xunit@2.3.1...2.4.1)

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

Author: dependabot-preview[bot]

test/json-ld.net.tests/json-ld.net.tests.csproj

@@ -22,7 +22,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.msbuild" Version="2.8.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
-    <PackageReference Include="xunit" Version="2.3.1" />
+    <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
     <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
   </ItemGroup>