chore: 更新数据库连接地址为远程服务器

将本地数据库连接地址从 localhost 更改为远程服务器地址 67.209.178.202，以支持远程数据库连接。

server/src/main/resources/application.yml

@@ -7,7 +7,7 @@ spring:
   datasource:
     type: com.alibaba.druid.pool.DruidDataSource
     driver-class-name: com.mysql.cj.jdbc.Driver
-    url: jdbc:mysql://localhost:3306/wuhan_saga?serverTimezone=Asia/Shanghai&useSSL=false&allowPublicKeyRetrieval=true&useUnicode=true&characterEncoding=UTF-8
+    url: jdbc:mysql://67.209.178.202:3306/wuhan_saga?serverTimezone=Asia/Shanghai&useSSL=false&allowPublicKeyRetrieval=true&useUnicode=true&characterEncoding=UTF-8
     username: root
     password: 135827
     druid: