Bump psycopg2 from 2.8.6 to 2.9.1

Bumps [psycopg2](https://github.com/psycopg/psycopg2) from 2.8.6 to 2.9.1.
- [Release notes](https://github.com/psycopg/psycopg2/releases)
- [Changelog](https://github.com/psycopg/psycopg2/blob/master/NEWS)
- [Commits](https://github.com/psycopg/psycopg2/commits)

---
updated-dependencies:
- dependency-name: psycopg2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 brotli==1.0.9
 cchardet==2.1.7
 mysqlclient==2.0.3
-psycopg2==2.8.6
+psycopg2==2.9.1
 pyodbc==4.0.30
 cx_oracle==8.2.1