updated test dependencies

Author: thefringeninja

src/SqlStreamStore.HAL.Tests/SqlStreamStore.HAL.Tests.csproj

@@ -20,10 +20,9 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="2.1.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.7.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
     <PackageReference Include="Shouldly" Version="3.0.0" />
-    <PackageReference Include="xunit" Version="2.3.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
-    <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
+    <PackageReference Include="xunit" Version="2.4.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
   </ItemGroup>
 </Project>