Try with specific Python version

Author: FrodeSolheim

.github/workflows/pypi.yml

@@ -44,6 +44,8 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12' 
 
       - name: Install pipx
         run: python3 -m pip install pipx