chore(poetry): 💚 make ci run well in python3.6

Author: MerleLiuKun

.github/workflows/test.yaml

@@ -25,6 +25,7 @@ jobs:
       - name: Install Poetry
         uses: snok/[email protected]
         with:
+          version: 1.1.15
           virtualenvs-create: true
           virtualenvs-in-project: true
       - name: Load cached venv