try new poetry

Author: willmcgugan

.github/workflows/pythonpackage.yml

@@ -23,7 +23,7 @@ jobs:
         # TODO: workaround for https://github.com/snok/install-poetry/issues/94
         uses: snok/[email protected]
         with:
-          version: 1.1.11
+          version: 1.3.1
           virtualenvs-in-project: true
       - name: Install dependencies
         run: poetry install