Try to fix broken(?) python-publish.yml (#324)

Author: lebrice

.github/workflows/python-publish.yml

@@ -18,10 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install poetry
-        run: |
-          python -m pip install --upgrade pip
-          pip install poetry
-
+        run: pipx install poetry
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with: