Log Message:
databases/ruby-sequel: update to 5.25.0

Update ruby-sequel to 5.25.0.

=== 5.25.0 (2019-10-01)

* Fix Sequel::SQL::NumericMethods#coerce to not raise NoMethodError if super \ 
method is not defined (jeremyevans) (#1645)

* Allow setting a default for a column that already has a default on Microsoft \ 
SQL Server (jeremyevans)

* Fix keyword argument separation warnings on Ruby master branch in \ 
csv_serializer plugin (jeremyevans)

* Add association_multi_add_remove plugin for adding/removing multiple \ 
associated objects in a single method call (AlexWayfer, jeremyevans) (#1641, \ 
#1643)

* Make sharding plugin integrate with server_block extension (jeremyevans)