Update test host to net 10

Author: huntharo

test/PwrDrvr.LambdaDispatch.Router.Tests/PwrDrvr.LambdaDispatch.Router.Tests.csproj

@@ -13,7 +13,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
     <PackageReference Include="Moq" Version="4.20.70" />
-    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="6.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="10.0.0-preview.1.25120.3" />
   </ItemGroup>
 
   <ItemGroup>