Update assembly and file versions to 3.4.0.0 (#159)

Updated the `<FileVersion>` and `<AssemblyVersion>` properties in the `Directory.Build.Props` file from `3.3.0.0` to `3.4.0.0` to reflect the new version of the project.

Author: maythamfahmi

Directory.Build.Props

@@ -4,8 +4,8 @@
     <Authors>Maytham Fahmi and Contributors</Authors>
     <Copyright>All Rights Reserved</Copyright>
     <Version>3.3.0</Version>
-    <FileVersion>3.3.0.0</FileVersion>
-    <AssemblyVersion>3.3.0.0</AssemblyVersion>
+    <FileVersion>3.4.0.0</FileVersion>
+    <AssemblyVersion>3.4.0.0</AssemblyVersion>
   </PropertyGroup>
 
   <PropertyGroup>