urlToHttpOptions Issue Starting Recently
# Bug Report

This status message has been popping up recently (last week or so) on homebridge console: 

```Failed to reach Ring server at https://oauth.ring.com/oauth/token.  urlToHttpOptions is not a function.  Trying again in 5 seconds...```

### Describe the Bug
The error above is displayed and connection to at least the doorbell is not working

### To Reproduce
Start ring-homebridge with at least a doorbell connected

### Expected behavior
Doorbell connection functions properly


### Screenshots/Logs
![image](https://user-images.githubusercontent.com/14036771/109202409-f24b5d80-7770-11eb-9a3e-e28d9bc2b9e3.png)


### Homebridge Ring Config

```

        {
            "refreshToken": "xxx",
            "platform": "Ring"
        }
```

### Environment
<!-- ✍️edit: -->
 - OS: Raspbian
 - Node.js: 14.5.0
 - NPM: 6.14.5
 - homebridge-ring: 9.15.3
 - homebridge: 1.3.1