supply github token to the cli

Author: nikomatsakis

.github/workflows/mdbook.yml

@@ -44,6 +44,8 @@ jobs:
         run: mdbook build
       - name: Generate JSON data
         run: cargo run -- json 2024h2 --json-path book/html/api/2024h2.json
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with: