Update postgres Docker tag to v14 (master) - autoclosed

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Update	Change
postgres	major	10 -> 14

---

Configuration

📅 Schedule: 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.