updating testing dependencies

Author: thefringeninja

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

@@ -18,12 +18,12 @@
     <ProjectReference Include="..\SqlStreamStore.HAL\SqlStreamStore.HAL.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0" />
     <PackageReference Include="OwinHttpMessageHandler" Version="1.3.8" />
     <PackageReference Include="Shouldly" Version="2.8.2" />
-    <PackageReference Include="xunit" Version="2.3.0-beta2-build3683" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.0-beta2-build1317" />
-    <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.0-beta1-build3642" />
+    <PackageReference Include="xunit" Version="2.3.0-beta5-build3769" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.0-beta5-build3769" />
+    <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.0-beta5-build3769" />
     <DotNetCliToolReference Include="Microsoft.DotNet.Watcher.Tools" Version="1.0.1" />
   </ItemGroup>
 </Project>