Log Message:
databases/ruby-sequel: update to 5.85.0

5.85.0 (2025-10-01)

* Support json_table on PostgreSQL 17+ in the pg_json_ops extension
  (jeremyevans)

* Make Dataset#get and #first without argument not create intermediate
  datasets if receiver uses raw SQL (jeremyevans)

* Add dataset_run extension, for building SQL using datasets, and running
  with Database#run (jeremyevans)

* Switch default connection pool to timed_queue on Ruby 3.2+ (jeremyevans)