Bump sequel from 5.22.0 to 5.23.0

[dependabot-preview]

Bumps sequel from 5.22.0 to 5.23.0.

Changelog

Sourced from sequel's changelog.

=== 5.23.0 (2019-08-01)

• Work around a bug on jdbc-sqlite3 3.27.2.1 when parsing schema for tables with columns with default values (jeremyevans)

• Work around a bug in jdbc-sqlite3 3.27.2.1 when in Database#foreign_key_list in the jdbc/sqlite3 adapter (jeremyevans)

• Make Dataset#execute* private methods respect explicit servers option, fixing Dataset#paged_each in the postgres adapter when sharding (jeremyevans) (#1632)

• Handle instances of subclasses of core classes when wrapping objects in the pg_json extension (jeremyevans) (#1631)

• Support :ansi Database option in the tinytds adapter (kenaniah) (#1629)

• Support cross-database and linked servers when parsing schema on Microsoft SQL Server (kenaniah) (#1629)

• Add insert_conflict plugin for automatically handling unique constraint conflicts when saving new model instances on PostgreSQL 9.5+ and SQLite 3.24.0+ (jeremyevans)

• Avoid errors when parsing schema in the mock sqlite adapter (jeremyevans)

• Avoid possible thread-safety issue in the timezones support (jeremyevans)

• Handle offsets when typecasting an array or hash to datetime when Sequel.datetime_class = Time (jeremyevans)

• Support Sequel.datetime_class = Time when using the named_timezones extension (jeremyevans)

Commits

• 198c5cf Bump version to 5.23.0
• 3498ccd Handle really slow copies in the sequel -C test
• 779a9ab Make insert_conflict plugin disable prepared statements correctly on PostgreSQL
• f979e23 Disable the use of prepared statements for insert when using the insert_confl...
• 110d716 Add some documentation about deleting from CTI datasets (Fixes #1635)
• 2eb2069 Work around a couple bugs in jdbc-sqlite3 3.27.2.1
• be9d9a5 Fix typo
• 8b3ffdd Document that Dataset#import return: :primary_key does not handle Dataset values
• edb6140 Make Dataset#execute* private methods respect explicit servers option, fixing...
• b1f2957 Handle instances of subclasses of core classes when wrapping objects in the p...
• Additional commits viewable in compare view

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