fix 心跳间隔任务调整

Src/Dlhis.ScheduledTask/Jobs/HeartbeatJob.cs

@@ -22,17 +22,17 @@ public class HeartbeatJob : BaseJob
     {
         var devices = await DbContext.Queryable<DeviceEntity>().Where(x => x.Enable).Where(x => x.HeartbeatInterval > 0).ToListAsync();
 
-        devices.AsParallel().ForAll(device =>
+        await Parallel.ForEachAsync(devices, async (device, cancellationToken) =>
         {
             try
             {
                 var ipInfo = JsonConvert.DeserializeObject<IPPortDto>(device.ConnectionInfo);
-                new TcpClient().Connect(IPAddress.Parse(ipInfo.IP), ipInfo.Port);
+                await new TcpClient().ConnectAsync(IPAddress.Parse(ipInfo.IP), ipInfo.Port, cancellationToken);
 
-                DbContext.Updateable<DeviceRegistryEntity>()
+                await DbContext.Updateable<DeviceRegistryEntity>()
                     .SetColumns(x => x.LastHeartbeatTime == DateTime.Now)
                     .Where(x => x.DeviceUniqueNo == device.UniqueNo)
-                    .ExecuteCommand();
+                    .ExecuteCommandAsync(cancellationToken);
             }
             catch (Exception)
             {