Log Message:
databases/ruby-sequel: update to 5.44.0

5.44.0 (2021-05-01)

* Add concurrent_eager_loading plugin, for eager loading multiple
  associations concurrently using separate threads (jeremyevans)

* Support :weeks as a interval unit in the date_arithmetic extension
  (jeremyevans) (#1759)

* Raise an exception if an interval hash with an unsupported key is passed
  in the date_arithmetic extension (jeremyevans) (#1759)

* Support dropping non-composite unique constraints on SQLite (jeremyevans)
  (#1755)