Add support for java.sql.Types.TIMESTAMP_WITH_TIMEZONE

The Liquibase documentation notes that specifying a java.sql.Types.* type will be converted to the correct type, however, there is currently no support for the java.sql.Types.TIMEZONE_WITH_TIMESTAMP type.

Using Liquibase 3.8.2 the following changeLog results in the approved_at column being created with the TIMESTAMP WITHOUT TIME ZONE type in PostgreSQL 12.1:

Based on the documentation, I would expect the approved_at column to be created with the TIMESTAMP WITH TIME ZONE type in PostgreSQL.