/usr/lib/ruby/vendor_ruby/sequel/extensions/ is in ruby-sequel 3.33.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/sequel/extensions/arbitrary_servers.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/blank.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/columns_introspection.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/inflector.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/looser_typecasting.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/migration.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/named_timezones.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/pagination.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/pretty_table.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/query.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/schema_dumper.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/server_block.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/sql_expr.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/string_date_time.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/thread_local_timezones.rb
/usr/lib/ruby/vendor_ruby/sequel/extensions/to_dot.rb