update publish action (#1286)

* 0.27  (#1272)

Author: jacalata

.github/workflows/publish-pypi.yml

@@ -19,7 +19,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: 3.9
       - name: Build dist files
         run: |
           python -m pip install --upgrade pip