/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/ is in ruby-sequel 4.15.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/as400.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/cubrid.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/db2.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/derby.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/fdbsql.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/firebirdsql.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/h2.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/hsqldb.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/informix-sqli.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/jdbcprogress.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/jtds.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/mssql.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/mysql.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/oracle.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/postgresql.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/sqlanywhere.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/sqlite.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/sqlserver.rb
/usr/lib/ruby/vendor_ruby/sequel/adapters/jdbc/transactions.rb