build(deps): bump sequelize from 6.36.0 to 6.37.3 in /backend (#39)

Bumps [sequelize](https://github.com/sequelize/sequelize) from 6.36.0 to 6.37.3.
- [Release notes](https://github.com/sequelize/sequelize/releases)
- [Changelog](https://github.com/sequelize/sequelize/blob/main/CHANGELOG.md)
- [Commits](https://github.com/sequelize/sequelize/compare/v6.36.0...v6.37.3)

---
updated-dependencies:
- dependency-name: sequelize
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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backend/package.json

@@ -18,7 +18,7 @@
     "express-rate-limit": "^7.3.1",
     "jsonwebtoken": "^9.0.2",
     "multer": "^1.4.5-lts.1",
-    "sequelize": "^6.36.0",
+    "sequelize": "^6.37.3",
     "sequelize-cli": "^6.6.2",
     "sqlite3": "^5.1.7"
   }