406 Not Acceptable - attempting to authenticate
### Is there an existing issue for this?

- [x] I have searched the existing issues

### Describe The Bug

This is running on a Synology box and originally worked for many months but then I think the token needed refreshing for some reason.

When I attempt to login either in the homebridge interface or in a terminal session using "ring-auth-cli"  I'm prompted for the username and password but then it comes back with this:

TypeError: Cannot use 'in' operator to search for 'error' in <html>
<head><title>406 Not Acceptable<title></head>
<body>
<center<h1>406 not Acceptable</h1></center>
<hr><center>openresty</center>
</body>
</html>

at RingRestClient.getAuth (/volume1/@appstore/homebridge/app/lib/node_modules/ring-client-api/lib/rest-client.js:263:119)




### To Reproduce

_No response_

### Expected behavior

I'm expecting for a new token to be issued.

### Relevant log output

```shell

```


_No response_

### OS

Linux

### Node.js Version

20.9.0

### NPM Version

10.9.0

### ring-client-api

13.2.1

### Operating System

Linux DS1 4.4.302+ #69057 SMP Fri Jan 12 17:02:28 CST 2024 x86_64 GNU/Linux synology_geminilake_224+