fix issue building docs

Author: quentinhaenn

.github/workflows/sphinx.yml

@@ -17,6 +17,9 @@ jobs:
       uses: ammaraskar/[email protected]
       with:
         pre-build-command: |
+          sudo apt-get update
+          sudo apt-get install build-essential
+          pip install --upgrade pip
           pip install -e ".[doc]"
     - name: Upload artifacts
       uses: actions/upload-artifact@v4