chore: get netstandard2.1 compatability back

ch1seL · ch1seL · commit 8094c8deec6c · 2023-11-26T18:01:30.000+03:00
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
@@ -4,7 +4,7 @@
 	<Import Project="..\PackageInfo.targets" />
 
 	<PropertyGroup>
-		<TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
+		<TargetFrameworks>netstandard2.1;net6.0;net7.0;net8.0</TargetFrameworks>
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
 
