older poetry

Author: schaefi

.github/workflows/ci-test-sdist.yml

@@ -31,7 +31,7 @@ jobs:
     - name: Install
       run: |
         python -m pip install --upgrade pip
-        python -m pip install poetry
+        python -m pip install poetry==1.7.1
     - name: Prepare
       run: |
         poetry build --version