update requirements for readme.yml

Author: sarahmish

.github/workflows/readme.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Install package and dependencies
       run: |
           python -m pip install --upgrade pip
-          python -m pip install invoke rundoc .
+          python -m pip install invoke tomli rundoc .
     - name: invoke readme
       env:
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}