added missing import

Author: David Nahodyl

src/Database/Query/FMBaseBuilder.php

@@ -5,6 +5,7 @@
 
 
 use BlueFeather\EloquentFileMaker\Exceptions\FileMakerDataApiException;
+use DateTimeInterface;
 use Illuminate\Database\Query\Builder;
 use Illuminate\Http\File;
 use Illuminate\Http\UploadedFile;