build(deps): bump psycopg2-binary from 2.9.10 to 2.9.12 in /backend

Bumps [psycopg2-binary](https://github.com/psycopg/psycopg2) from 2.9.10 to 2.9.12.
- [Changelog](https://github.com/psycopg/psycopg2/blob/master/NEWS)
- [Commits](psycopg/psycopg2@2.9.10...2.9.12)

---
updated-dependencies:
- dependency-name: psycopg2-binary
  dependency-version: 2.9.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

backend/pyproject.toml

@@ -8,7 +8,7 @@ dependencies = [
     "aiohttp>=3.8.0",
     "authlib>=1.3.0",
     "cryptography>=42.0.0",
-    "psycopg2-binary==2.9.10",
+    "psycopg2-binary==2.9.12",
     "PyJWT>=2.8.0",
     "sqlalchemy~=2.0.37",
     "greenlet<3.5.0",