Post merge fix

Arkatufus · Arkatufus · commit e84332961dd6 · 2022-05-13T02:15:58.000+07:00
diff --git a/src/core/Akka.TestKit/Akka.TestKit.csproj b/src/core/Akka.TestKit/Akka.TestKit.csproj
@@ -7,6 +7,7 @@
         <TargetFrameworks>$(NetStandardLibVersion);$(NetLibVersion)</TargetFrameworks>
         <PackageTags>$(AkkaPackageTags)</PackageTags>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
+        <LangVersion>8.0</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
