chore(deps): bump psycopg from 3.2.3 to 3.2.4 in /backend

Bumps [psycopg](https://github.com/psycopg/psycopg) from 3.2.3 to 3.2.4.
- [Changelog](https://github.com/psycopg/psycopg/blob/master/docs/news.rst)
- [Commits](psycopg/psycopg@3.2.3...3.2.4)

---
updated-dependencies:
- dependency-name: psycopg
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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