Fix requirements conflict between dbt 1.2 and tox

dev-requirements.txt

@@ -19,6 +19,6 @@ pytest-dotenv~=0.5.2
 pytest-logbook~=1.2
 pytest-xdist~=3.5
 pytz~=2023.3
-tox~=4.11
+tox~=3.28
 twine~=4.0
 wheel~=0.42