Update test-push.yml

Author: mittinatten

.github/workflows/test-push.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
+          pip install --use-pep517 -r requirements.txt
           python setup.py install
       - name: Run tests
         run: python setup.py test