install python to generate docs

Author: dgarros

.github/workflows/ci.yml

@@ -145,7 +145,15 @@ jobs:
           cache-dependency-path: docs/package-lock.json
       - name: "Install dependencies"
         run: npm install
-      - name: Install Python dependencies
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: "3.12"
+      - name: Install UV
+        uses: astral-sh/setup-uv@v4
+        with:
+          version: "${{ needs.prepare-environment.outputs.UV_VERSION }}"
+      - name: Install dependencies
         run: uv sync --all-groups --all-extras
       - name: "Build docs website"
         run: "uv run invoke docs"