add missing import

Author: ds-cbo

postgres-types/src/chrono_04.rs

@@ -1,5 +1,7 @@
 use bytes::BytesMut;
-use chrono_04::{DateTime, Duration, FixedOffset, Local, NaiveDate, NaiveDateTime, NaiveTime, Utc};
+use chrono_04::{
+    DateTime, Duration, FixedOffset, Local, NaiveDate, NaiveDateTime, NaiveTime, TimeZone, Utc,
+};
 use postgres_protocol::types;
 use std::error::Error;