Add permission

.github/workflows/book.yml

@@ -50,10 +50,17 @@ jobs:
 
   deploy:
     runs-on: ubuntu-latest
+    needs: [build]
+
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
-    needs: [build]
+
+    # Permissions needed to deploy to GitHub Pages
+    permissions:
+      pages: write
+      id-token: write
+
     steps:
       - name: Deploy to GitHub Pages
         id: deployment