Set version 2.4.0 (#872)

Author: KrzysztofPajak

src/Build/Grand.Common.props

@@ -42,7 +42,7 @@
     </ItemGroup>
     <Target Name="SetVersion" BeforeTargets="PrepareForBuild">
         <PropertyGroup>
-            <Version>2.4.0-beta</Version>
+            <Version>2.4.0</Version>
         </PropertyGroup>
     </Target>
 </Project>