feat: tossPay 엔티티 컬럼 수정

Author: ense333

src/main/java/com/threestar/trainus/domain/payment/entity/TossPayment.java

@@ -27,7 +27,7 @@ public class TossPayment {
 
 	@Id
 	@GeneratedValue(strategy = GenerationType.IDENTITY)
-	private Long tossPaymentId;
+	private Long id;
 
 	@Column(nullable = false, unique = true)
 	private String paymentKey;