fix ci

Author: MelvinKl

.github/workflows/ci.yaml

@@ -25,8 +25,9 @@ jobs:
       - name: Install Python SDK Core
         working-directory: 'python-core'
         run: make install
-      - name: Install
-        run: make install-dev
+          pip install poetry
+          poetry config virtualenvs.create false
+          make install-dev
       - name: Lint        
         run: make lint 
       - name: Test