fix(deps): update dependency sequelize to v5.4.0

Author: renovate-bot

sample/07-sequelize/package.json

@@ -16,7 +16,7 @@
     "mysql2": "1.6.5",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.4.0",
-    "sequelize": "5.3.5",
+    "sequelize": "5.4.0",
     "sequelize-typescript": "0.6.10",
     "typescript": "3.4.3"
   },