Bump psycopg2 from 2.9.5 to 2.9.6 (#212)

Bumps [psycopg2](https://github.com/psycopg/psycopg2) from 2.9.5 to 2.9.6.
- [Release notes](https://github.com/psycopg/psycopg2/releases)
- [Changelog](https://github.com/psycopg/psycopg2/blob/master/NEWS)
- [Commits](https://github.com/psycopg/psycopg2/commits/2.9.6)

---
updated-dependencies:
- dependency-name: psycopg2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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