Update sphinx_publish.yml

.github/workflows/sphinx_publish.yml

@@ -6,7 +6,6 @@ on:
     branches: [main]
 
 # Cancel any in-progress job or run
-# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#concurrency
 concurrency:
   group: ${{ github.ref }}
   cancel-in-progress: true
@@ -21,10 +20,25 @@ jobs:
       pages: write
       id-token: write
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.11
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
       - name: Setup Graphviz
         uses: ts-graphviz/setup-graphviz@v2
+
       - name: Setup Pandoc
         uses: r-lib/actions/setup-pandoc@v2
+
       - id: deployment
         uses: sphinx-notes/pages@v3
         with: