Fix failing CI on Python 3.5

Author: fantix

.github/workflows/tests.yml

@@ -49,6 +49,6 @@ jobs:
     - name: Test
       if: steps.release.outputs.version == 0
       run: |
-        pip install wheel
+        pip install -U pip setuptools wheel
         pip install -e .[test]
         python setup.py test