test new github action

.github/workflows/jekyll.yml

@@ -78,6 +78,7 @@ jobs:
           git config --global user.name 'github-actions[bot]'
           git config --global user.email 'github-actions[bot]@users.noreply.github.com'
           git checkout -b deploy-server-test
+          git pull origin deploy-server-test
           cp -r ./_site/* .
           git add .
           git commit -m "Deploy Jekyll site"