Log Message:
databases/ruby-sequel: update to 5.55.0

5.55.0 (2022-04-01)

* Support :setup_regexp_function Database option in the sqlite adapter to
  allow the use of regexps when querying (jeremyevans)

* Add auto_restrict_eager_graph plugin for automatically disallow
  eager_graph with associations needing but lacking graph options
  (jeremyevans)

* Fix placeholder literalizer optimization for dataset aggregate methods on
  a model dataset (belousovAV) (#1847, #1848)