Reverted "Microsoft.CodeAnalysis.CSharp" to 4.11.0.

Author: TiLied

CSharpToJavaScript/CSharpToJavaScript.csproj

@@ -20,7 +20,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.11.0" />
   </ItemGroup>
 
   <ItemGroup>