Bumps [sequelize](https://github.com/sequelize/sequelize) from 3.14.2 to 6.3.5. - [Release notes](https://github.com/sequelize/sequelize/releases) - [Commits](https://github.com/sequelize/sequelize/compare/v3.14.2...v6.3.5) Signed-off-by: dependabot[bot] <support@github.com>