test: bump dependency versions

test/Discord.Net.Tests/Discord.Net.Tests.csproj

@@ -2,9 +2,8 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <RootNamespace>Discord</RootNamespace>
-    <TargetFramework>netcoreapp1.1</TargetFramework>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
     <DebugType>portable</DebugType>
-    <PackageTargetFallback>$(PackageTargetFallback);portable-net45+win8+wp8+wpa81</PackageTargetFallback>
     <NoWarn>IDISP001,IDISP002,IDISP004,IDISP005</NoWarn>
   </PropertyGroup>
   <ItemGroup>
@@ -22,11 +21,14 @@
     <ProjectReference Include="../../src/Discord.Net.Analyzers/Discord.Net.Analyzers.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Akavache" Version="5.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.7.2" />
+    <PackageReference Include="Akavache" Version="6.0.31" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.reporters" Version="2.4.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="xunit.runner.reporters" Version="2.4.1" />
   </ItemGroup>
 </Project>