changed id type in repo

src/main/java/bidflow/auction/persistence/repository/AuctionRepository.java

@@ -3,6 +3,5 @@ package bidflow.auction.persistence.repository;
 import bidflow.auction.persistence.domain.Auction;
 import org.springframework.data.mongodb.repository.MongoRepository;
 
-import java.util.UUID;
 
-public interface AuctionRepository extends MongoRepository<Auction, UUID> { }
+public interface AuctionRepository extends MongoRepository<Auction, String> { }