fix updateLob function not returning OCIBlob object.
fix updateLob function not returning OCIBlob object.

vyolla/laravel-oci8,ChaosPower/laravel-oci8-1,Ck0814/laravel-oci8,vincentshiqi/laravel-oci8,walhalatur/laravel-oci8,yajra/laravel-oci8,yajra/laravel-oci8