Fix build break by disable testMaps for 21.4

[zhicwu]

Will add integration test into ClickHouse repo so that we don't have to do this ever again.

[github-actions]

Benchmark                           (client)  (statement)   Mode  Cnt     Score     Error  Units
Basic.insertOneRandomNumber  clickhouse-jdbc       normal  thrpt   20   269.406 ±  28.836  ops/s
Basic.insertOneRandomNumber  clickhouse-jdbc     prepared  thrpt   20   252.272 ±  25.446  ops/s
Basic.selectOneRandomNumber  clickhouse-jdbc       normal  thrpt   20  1262.903 ± 129.604  ops/s
Basic.selectOneRandomNumber  clickhouse-jdbc     prepared  thrpt   20  1269.731 ± 168.300  ops/s