fix(ci): also update setuptools when setting up the virtual environment (#795)

Author: jenstroeger

Makefile

@@ -94,7 +94,7 @@ setup: force-upgrade
 .PHONY: upgrade force-upgrade
 upgrade: .venv/upgraded-on
 .venv/upgraded-on: pyproject.toml
-	python -m pip install --upgrade pip
+	python -m pip install --upgrade pip setuptools
 	python -m pip install --upgrade wheel
 	python -m pip install --upgrade --upgrade-strategy eager --editable .[actions,dev,docs,hooks,test]
 	$(MAKE) upgrade-quiet