chore(deps): update psycopg requirement in /api

Updates the requirements on [psycopg](https://github.com/psycopg/psycopg) to permit the latest version.
- [Changelog](https://github.com/psycopg/psycopg/blob/master/docs/news.rst)
- [Commits](psycopg/psycopg@3.1.17...3.1.18)

---
updated-dependencies:
- dependency-name: psycopg
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

api/requirements.txt

@@ -12,7 +12,7 @@ django-prometheus~=2.3.1
 dnspython~=2.5.0
 httpretty~=1.0.5  # 1.1 breaks tests. Does not run in production, so stick to it.
 pyotp~=2.9.0
-psycopg~=3.1.17
+psycopg~=3.1.18
 psl-dns~=1.1.0
 pylibmc~=1.6.3
 pyyaml~=6.0.1