Update xunit test project dependencies

Author: bchavez

Source/Bogus.Tests/Bogus.Tests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net471;netcoreapp2.0;netcoreapp3.1</TargetFrameworks>
+    <TargetFrameworks>net471;netcoreapp2.1;netcoreapp3.1</TargetFrameworks>
     <AssemblyOriginatorKeyFile>
     </AssemblyOriginatorKeyFile>
     <SignAssembly>false</SignAssembly>
@@ -11,8 +11,12 @@
     <PackageReference Include="morelinq" Version="3.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
     <PackageReference Include="Rant" Version="3.0.530" />
-    <PackageReference Include="xunit" Version="2.3.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="XunitXml.TestLogger" Version="2.1.26" />
     <PackageReference Include="Z.ExtensionMethods.WithTwoNamespace" Version="2.0.13" />
   </ItemGroup>