chore(deps): update postgresql

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/cloudnative-pg/postgresql	minor	18.4 → 18.6
ghcr.io/cloudnative-pg/postgresql	minor	17.10 → 17.11
ghcr.io/cloudnative-pg/postgresql	minor	16.14 → 16.15
ghcr.io/cloudnative-pg/postgresql	minor	15.18 → 15.19
ghcr.io/cloudnative-pg/postgresql	minor	14.23 → 14.24

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Enabled.

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

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

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

---

This PR was generated by Mend Renovate. View the repository job log.

[marxmanEUW]

Would be great if this could be merged. A lot of security issues were fixed: https://www.postgresql.org/about/news/postgresql-186-1711-1615-1519-1424-and-19-beta-3-released-3365/