Update publish.yml

Author: andypbarrett

.github/workflows/publish.yml

@@ -23,6 +23,7 @@ jobs:
           python-version: '3.10'
           cache: 'pip'
       - run: pip install jupyter
+      - run: pip install -r requirements.txt
 
       - name: Render and Publish
         uses: quarto-dev/quarto-actions/publish@v2