fix(deps): update dependency sequelize to v6.21.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sequelize (source)	6.19.0 -> 6.21.3

---

Release Notes

sequelize/sequelize

v6.21.3

Compare Source

Bug Fixes

• postgres: attach postgres error-handler earlier in lifecycle (v6) (#​14731) (90bb694)

v6.21.2

Compare Source

Bug Fixes

• properly escape multiple $ in fn args (#​14678) (7bb60e3)

v6.21.1

Compare Source

Bug Fixes

• postgres: use schema set in sequelize config by default (#​14665) (2f3b924)

v6.21.0

Compare Source

Features

• exports types to support typescript >= 4.5 nodenext module (#​14620) (cbdf73e)

v6.20.1

Compare Source

Bug Fixes

• kill connection on commit/rollback error (#​14535) (e1a9c28)

v6.20.0

Compare Source

Features

• support cyclic foreign keys (#​14499) (b37df96)

v6.19.2

Compare Source

Bug Fixes

• accept replacements in ARRAY[] & followed by ; (#​14518) (e37c572)

v6.19.1

Compare Source

Bug Fixes

• do not replace :replacements inside of strings (#​14472) (ccaa399)

⚠️ BREAKING CHANGE: This change is a security fix that patches a serious SQL injection vulnerability, however it is possible that your application made use of it and broke as a result of this change. Please see this issue for more information.

---

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.