databases/ruby-sequel: update to 5.74.0

5.74.0 (2023-11-01)

* Make generated columns show up in Database#schema when using SQLite 3.37+
  (jeremyevans) (#2087)
* Add revert method for Sequel.migration blocks, to revert changes inside
  the block on up, and apply the changes on down (jeremyevans)
* Re-add is_json and is_not_json methods to the pg_json_ops extension, as
  the support was re-added in PostgreSQL 16 (jeremyevans)
* Avoid infinite loop when handling exceptions with a cause loop in jdbc
  adapter (jeremyevans)

(taca)