fix(deps): update dependency sequelize to v6.21.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sequelize (source)	6.21.1 -> 6.21.2

---

Release Notes

sequelize/sequelize

### [`v6.21.2`](https://togithub.com/sequelize/sequelize/releases/tag/v6.21.2) [Compare Source](https://togithub.com/sequelize/sequelize/compare/v6.21.1...v6.21.2) ##### Bug Fixes - properly escaoe multiple `$` in `fn` args ([#​14678](https://togithub.com/sequelize/sequelize/issues/14678)) ([7bb60e3](https://togithub.com/sequelize/sequelize/commit/7bb60e3531127da684cc1f75307410c53dfc9c8c))

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by Mend Renovate. View repository job log here.