fix: 更新 PostgreSQL 主机地址和密码，修正心跳事件表名

Models/TimerClass.cs

@@ -517,7 +517,7 @@ namespace AutoNotificatPhone.Models
                 const string sql = @"SELECT write_ts_ms
                                     FROM (
                                         SELECT write_ts_ms
-                                        FROM heartbeat.heartbeat_events
+                                        FROM heartbeat.heartbeat_events_g5
                                         ORDER BY ts_ms DESC
                                         LIMIT 3000
                                     ) AS recent_events