databases/ruby-sequel: update to 5.61.0

5.61.0 (2022-10-01)

* Make Database#foreign_key_list on PostgreSQL return results for
  partitioned tables (jeremyevans)

* Add Database#check_string_typecast_bytesize for checking bytesize of
  strings before typecasting (jeremyevans)

* Treat negative hexidecimal strings similar to positive hexidecimal strings
  when typecasting to integer (jeremyevans)

* Remove is_json and is_not_json methods from the pg_json_ops extension, as
  the support was removed in PostgreSQL 15 beta 4 (jeremyevans)

* Fix handling of timestamps before the date of calendar reform when using
  pg_extended_date_support extension on Ruby 3.2 (jeremyevans)

(taca)