Modify deployment script to include git pull

Update dependencies and restart the NeoBot service after pulling the latest code.

.github/workflows/main.yml

@@ -35,6 +35,7 @@ jobs:
             set -e
             # 适配NeoBot项目：更新依赖+重启systemd服务
             cd /home/k/NeoBot
+            git pull
             pip install -r requirements.txt --upgrade --timeout 300 --only-binary=:all:
             sudo systemctl daemon-reload
             sudo systemctl restart neobot