Bump sequel from 5.66.0 to 5.67.0

[dependabot[bot]]

Bumps sequel from 5.66.0 to 5.67.0.

Changelog

Sourced from sequel's changelog.

=== 5.67.0 (2023-04-01)

• Fix dumping of string column sizes in the schema dumper on MSSQL (jeremyevans) (#2013)

• Improve dumping of tables in non-default schemas in the schema_dumper extension (jeremyevans) (#2006)

• Make Database#{tables,views} support :qualify option on Microsoft SQL Server (jeremyevans)

• Avoid use of singleton classes for datasets instances on Ruby 2.4+ (jeremyevans) (#2007)

• Deprecate registering datasets extensions using an object other than a module (jeremyevans)

• Add set_literalizer extension, for treating set usage in datasets similar to array usage (jeremyevans) (#1997)

Commits

• ca0d2b3 Bump version to 5.67.0
• 0151e09 Add nocov markers around Ruby-version specific code
• 9708978 Fix dumping of string column sizes in the schema dumper on MSSQL (Fixes #2013)
• b4e56aa Update documentation for Database#fetch
• 8bc6016 Fix small typo in documentation
• ddad370 Modify and simplify issue template
• 69060e9 chore: add new issues template
• db7bcec Note that the prepared_statements{,_safe} plugins exist for backwards compati...
• da83ce8 Improve dumping of tables in non-default schemas in the schema_dumper extensi...
• 78ba98f Make Database#{tables,views} support :qualify option on Microsoft SQL Server
• Additional commits viewable in compare view

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