fix sequelize update incorrect typings
fix sequelize update incorrect typings

markogresak/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,rolandzwaga/DefinitelyTyped,magny/DefinitelyTyped,georgemarshall/DefinitelyTyped,one-pieces/DefinitelyTyped,borisyankov/DefinitelyTyped,rolandzwaga/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped,magny/DefinitelyTyped,borisyankov/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,dsebastien/DefinitelyTyped,dsebastien/DefinitelyTyped