Merge pull request ckan#8377 from ckan/fix-failures-setup.py

Use `pip install -e .` in CircleCI setup

test-infrastructure/install_deps.sh

@@ -5,7 +5,8 @@ apt update
 apt install -y postgresql-client
 
 #Python Dependencies
+pip install -U pip
 pip install -r requirements.txt
 pip install -r dev-requirements.txt
-python setup.py develop
+pip install -e .
 pip check