fix: install Poetry first when publishing docs

.github/workflows/pypipublish.yml

@@ -40,6 +40,12 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: "3.11"
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          version: latest
+          virtualenvs-in-project: true
+          virtualenvs-create: true
       - run: |
           poetry install --with=dev
       - run: |