Update snake.yml

Author: CatCodeMe

.github/workflows/snake.yml

@@ -2,7 +2,7 @@ name: Generate Snake
 
 on:
   schedule:
-    - cron: "0 */12 * * *" # Runs every 12 hours
+    - cron: "0 2 * * *" # Runs every day 2:00
   push:
     branches:
       - main  # 添加 main 分支的 push 触发