getColumnClassName always returns "java.lang.Object", it could return a more accurate type

[fabiencelier]

https://github.com/xerial/sqlite-jdbc/blob/6ca62fd07bf7faf58e923ba8651757621ffc693c/src/main/java/org/sqlite/jdbc3/JDBC3ResultSet.java#L694-L697

It does not break the contract of the method as it will always return a subclass of Object but it is useless.