Correct configurations for Localization.Tests project

Author: alex-kulakov

Extensions/Xtensive.Orm.Localization.Tests/Xtensive.Orm.Localization.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <DocumentationFile />
-    <Configurations>Debug;Release;Debug-NET6;Release-NET6;Debug-NET7;Release-NET7;Debug-NET7;Release-NET7</Configurations>
+    <Configurations>Debug;Release;Debug-NET6;Release-NET6;Debug-NET7;Release-NET7;Debug-NET8;Release-NET8</Configurations>
   </PropertyGroup>
   <Import Project="$(SolutionDir)MSBuild\DataObjects.Net.InternalBuild.targets" />
   <ItemGroup>