Tries to set wrong nanos on java.sql.Timestamp

It seems podam tries to set wrong value with [java.sql.Timestamp#setNanos](https://docs.oracle.com/javase/8/docs/api/java/sql/Timestamp.html#setNanos-int-).


```
Caused by: java.lang.IllegalArgumentException: nanos > 999999999 or < 0
```