Switch back to installing psycopg2 for test

You can use `pyscopg3` while having `psycopg2` installed,
but not the other way around. Django will use `psycopg3`
when available, otherwise `psycopg2`.

Author: Photonios

setup.py

@@ -75,6 +75,7 @@ def run(self):
         ':python_version <= "3.6"': ["dataclasses"],
         "docs": ["Sphinx==2.2.0", "sphinx-rtd-theme==0.4.3", "docutils<0.18"],
         "test": [
+            "psycopg2==2.9.10",
             "dj-database-url==0.5.0",
             "pytest==6.2.5",
             "pytest-benchmark==3.4.1",
@@ -87,13 +88,6 @@ def run(self):
             "coveralls==3.3.0",
             "snapshottest==0.6.0",
         ],
-        "local": [
-            "Django~=4.2; python_version < '3.10'",
-            "Django~=5.2; python_version >= '3.10'",
-            "psycopg~=3.2; python_version >= '3.8'",
-            "psycopg~=3.1; python_version >= '3.7'",
-            "psycopg~=3.0; python_version <= '3.6'",
-        ],
         "analysis": [
             "black==22.3.0",
             "flake8==4.0.1",