Merge pull request #1964 from Giacomo92/pr_1378

[Updated PR#1378] Fix Carbon import on Model as Laravel

Author: jenssegers

Diff for: src/Jenssegers/Mongodb/Eloquent/Model.php

@@ -2,7 +2,7 @@
 
 namespace Jenssegers\Mongodb\Eloquent;
 
-use Carbon\Carbon;
+use Illuminate\Support\Carbon;
 use DateTime;
 use Illuminate\Contracts\Queue\QueueableCollection;
 use Illuminate\Contracts\Queue\QueueableEntity;