Merge pull request #277 from linked-data-dotnet/dependabot/nuget/support/1.x/xunit-2.8.0

Bump xunit from 2.7.0 to 2.8.0

Author: asbjornu

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

@@ -23,7 +23,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.msbuild" Version="6.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.7.0" />
+    <PackageReference Include="xunit" Version="2.8.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.7" />
     <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
   </ItemGroup>