chore(deps): update postgres docker tag to v13.3

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
postgres	major	12.6-alpine -> 13.3-alpine
postgres	minor	13.2 -> 13.3

---

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 these updates again.

---

• [ ] If you want to rebase/retry this PR, check this box.

---

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