chore: Unify backend express project into ESM (#281)

backend/package.json

@@ -2,6 +2,7 @@
   "name": "unittcms-backend",
   "version": "1.0.0",
   "private": true,
+  "type": "module",
   "scripts": {
     "start": "node --env-file=.env index",
     "dev": "node index",
@@ -19,8 +20,8 @@
     "jsonwebtoken": "^9.0.2",
     "multer": "^1.4.5-lts.1",
     "papaparse": "^5.5.2",
-    "sequelize": "^6.37.5",
-    "sequelize-cli": "^6.6.2",
+    "sequelize": "^6.37.7",
+    "sequelize-cli": "^6.6.3",
     "sqlite3": "^5.1.7",
     "xmlbuilder2": "^3.1.1"
   }