fix: upgrade sequelize to latest version to fix CVE

Signed-off-by: BoHong Li <a60814billy@gmail.com>

lib/models/index.js

@@ -10,7 +10,9 @@ var config = require('../config')
 var logger = require('../logger')
 
 var dbconfig = cloneDeep(config.db)
-dbconfig.logging = config.debug ? logger.info : false
+dbconfig.logging = config.debug ? (data) => {
+  logger.info(data)
+} : false
 
 var sequelize = null