Revert "Upgrade to psycopg2 2.8"
Revert "Upgrade to psycopg2 2.8"

This reverts commit 87c6dd2dc5ff52b39e05028be5fd17096f942938.

makinacorpus/Geotrek,makinacorpus/Geotrek,GeotrekCE/Geotrek-admin,GeotrekCE/Geotrek-admin,makinacorpus/Geotrek,makinacorpus/Geotrek,GeotrekCE/Geotrek-admin,GeotrekCE/Geotrek-admin