Only run update uri query when it has actually changed.

The model's `update()` method is smart about it, but the query builder's `update()` method isn't.

Author: jesseleite

src/Entries/CollectionRepository.php

@@ -15,7 +15,7 @@ public function updateEntryUris($collection, $ids = null)
         }
 
         $query->get()->each(function ($entry) {
-            EntryModel::where('id', $entry->id())->update(['uri' => $entry->uri()]);
+            EntryModel::find($entry->id())->update(['uri' => $entry->uri()]);
         });
     }
 }