Build fix

Author: nikmolnar

.github/workflows/python-tests.yml

@@ -21,8 +21,8 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          python -m pip install poetry
           rm poetry.lock
-          pipx install poetry
           poetry env use system
           poetry install --no-root
       - name: Test with pytest