do not cache dependencies, we don't check-in our lockfile because this is a middlestream dependency

Author: bckohan

.github/workflows/test.yml

@@ -50,7 +50,6 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-        cache: 'poetry'
 
     - name: Install Poetry
       uses: snok/install-poetry@v1