Update dependency pg to v1.5.4

[renovate]

This PR contains the following updates:

Package	Update	Change
pg (changelog)	patch	1.5.3 -> 1.5.4

---

Release Notes

ged/ruby-pg (pg)

v1.5.4

Compare Source

• Fix compiling the pg extension with MSVC 2022. #​535
• Set PG::Connection's encoding even if setting client_encoding on connection startup fails. #​541
• Don't set the server's client_encoding if it's unnecessary. #​542
  This is important for connection proxies, who disallow configuration settings.
• Update Windows fat binary gem to OpenSSL-3.1.2 and PostgreSQL-15.4.

---

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, check this box

---

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