Multiple failed to reach server errors 
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# Bug Report

### Describe the Bug
<!-- ✍️edit: --> A clear and concise description of the problem...
Homebridge log shows the following connection errors multiple times over multiple days.  I’m trying to isolate the exact cause.  Multiple connection issues with server.  Also, I’ve noticed that sometimes it will correct itself if I reboot HB. 

### To Reproduce
Steps to reproduce the behavior:
 - Start Homebridge
 - open stream on HomeKit
 - Close
 - Let sit (idle) check log later on?
 - 
### Expected behavior
<!-- ✍️edit: --> A clear and concise description of what you expected to happen.
No errors

### Screenshots/Logs

```

[27/09/2021, 13:19:19] [homebridge-ring] Failed to reach Ring server at https://app.ring.com/api/v1/mode/location/677a9216-XXXXXX.  Timeout awaiting 'request' for 20000ms.  Trying again in 5 seconds...
[27/09/2021, 13:38:34] [homebridge-ring] Failed to reach Ring server at https://api.ring.com/clients_api/dings/active.  Timeout awaiting 'request' for 20000ms.  Trying again in 5 seconds...
[27/09/2021, 17:01:32] [homebridge-ring] Failed to reach Ring server at https://api.ring.com/clients_api/dings/active.  getaddrinfo ENOTFOUND api.ring.com.  Trying again in 5 seconds...
[28/09/2021, 18:12:02] [homebridge-ring] Failed to reach Ring server at https://app.ring.com/api/v1/mode/location/677a9216-XXXXXX.  getaddrinfo ENOTFOUND app.ring.com.  Trying again in 5 seconds... 

```

### Additional context
<!-- ✍️edit: --> Add any other context about the problem here.

### Homebridge Ring Config
Post homebridge-ring platform config  _without sensitive information_
```

 "refreshToken": "XXX
            "_bridge": {
                "username": "Xxx",
                "port": 43051

```

### Environment
<!-- ✍️edit: -->
 - OS: raspbian
 - Node.js: 14.17.6
 - NPM: 6.14.15 
 - homebridge-ring: 9.21.2
 - homebridge: 1.3.4
 - hoobs: n/a
