fix: downgrade Poetry version to 2.1.1 in GitHub Action

Author: arthur-debert

.github/actions/setup-python-poetry/action.yml

@@ -21,7 +21,7 @@ runs:
     - name: Install Poetry
       uses: snok/install-poetry@v1
       with:
-        version: 2.11.0
+        version: 2.1.1
         virtualenvs-create: true
         virtualenvs-in-project: true
         installer-parallel: true