Updated the version from mongo to 3.6

tools/src/Services/Mongodb.php

@@ -37,7 +37,7 @@ class Mongodb extends InitialService
         $registry = "";
         $host_env_file = "";
         extract($this->getConfigVar());
-        $version = "3.4";
+        $version = "3.6";
         if ($this->getRelease()->needInstallModule($module)) {
             $this->getComposer()
                 ->addService($module)