Do not use python 3.12 for publishing workflow (#78)

Author: jbusecke

.github/workflows/publish.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v3
         with:
-          python-version: '3.x'
+          python-version: '3.11'
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip