tweak script

Author: ahebrank

.github/workflows/publish.yml

@@ -7,14 +7,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up Python
-        uses: actions/setup-python@v1
-        with:
-          python-version: 3.9
-
       - name: install dependencies & build
         run: |
-          pip3 install setuptools build wheel
+          python3 -m pip install setuptools build wheel
           python3 setup.py sdist bdist_wheel
 
       - name: publish to Test PyPi