Fixed doc deploy GA

Author: javiber

.github/workflows/ci.yml

@@ -161,6 +161,9 @@ jobs:
         with:
           python-version: "${{ env.PYTHON_VERSION }}"
 
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+
       - name: Install dependencies
         run: pip install -r docs/requirements.txt