mbdata: fix postgresql deprecation warning

mbdata/models.py

@@ -5,7 +5,7 @@
 # pylint: disable=W0232
 
 from sqlalchemy import Column, Integer, String, ForeignKey, Boolean, DateTime, Time, Date, Enum, Interval, CHAR, CheckConstraint, sql
-from sqlalchemy.dialects.postgres import UUID, SMALLINT, BIGINT
+from sqlalchemy.dialects.postgresql import UUID, SMALLINT, BIGINT
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.ext.hybrid import hybrid_property
 from sqlalchemy.orm import relationship, composite, backref

mbdata/types.py

@@ -3,7 +3,7 @@
 
 import re
 from sqlalchemy.ext.compiler import compiles
-from sqlalchemy.dialects.postgres import UUID
+from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.types import UserDefinedType
 from sqlalchemy.sql.expression import ClauseElement, TextClause