build(deps): update psycopg2 requirement from ~=2.9.0 to ~=2.9.6

Updates the requirements on [psycopg2](https://github.com/psycopg/psycopg2) to permit the latest version.
- [Changelog](https://github.com/psycopg/psycopg2/blob/master/NEWS)
- [Commits](psycopg/psycopg2@2.9.6...2.9.6)

---
updated-dependencies:
- dependency-name: psycopg2
  dependency-type: direct:production
...

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

requirements-prod.txt

@@ -1,5 +1,5 @@
 Django~=4.2.0
 djangorestframework~=3.14.0
 django-filter~=23.2.0
-psycopg2~=2.9.0
+psycopg2~=2.9.6
 sqlparse~=0.4.0