Merge pull request #22 from miyabayt/renovate/sequelize-6.x

Update dependency sequelize to v6.21.4

Author: miyabayt

package-lock.json

@@ -31,7 +31,7 @@
     "pug": "3.0.2",
     "qs": "6.10.1",
     "respond.js": "1.4.2",
-    "sequelize": "6.6.2",
+    "sequelize": "6.21.4",
     "uuid": "8.3.2"
   },
   "devDependencies": {