fix: test regression

Author: Jaxelr

tests/Carter.Cache.Tests/Carter.Cache.Tests.csproj

@@ -7,6 +7,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
     <PackageReference Include="Microsoft.Extensions.Logging" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="StackExchange.Redis" />
     <PackageReference Include="System.Text.Json" />
     <PackageReference Include="xunit" />