Correct Websocket updates URL
**Describe The Problem:**
Hopefully you can help me out...

I'm trying to setup a custom configuration, no HomeBridge. And using this very helpfull source along the way. Thanks so far.

**To Reproduce:**
According to <a href="https://github.com/hjdhjd/homebridge-unifi-protect/blob/master/docs/ProtectAPI.md">ProtectAPI.md</a> the websocket updates URL should be:

```
https://protect-nvr-ip/proxy/protect/ws/update?lastUpdateId?lastUpdateId=X
```

But when I interpret <a href="https://github.com/hjdhjd/homebridge-unifi-protect/blob/1d0d28a8b020878ee8f478244bed7ec361b33779/src/protect-api.ts#L225">protect-api.ts</a> I think it should be:

```
wss://protect-nvr-ip/proxy/protect/ws/updates?lastUpdateId=X
```

But I cannot setup the websocket connection in both ways. I am able to read the lastUpdateId from the bootstrap.

What should the correct websocket updates URL be ?

Like this:
```
wss://x.x.x.x/proxy/protect/ws/updates?lastUpdateId=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
```

**Logs:**
No logs available

**Homebridge Configuration:**
No Homebrigde in use

**Screenshots:**
No screenshots available

**Environment:**

* **Homebridge Version:**  Custom
* **Node Version:** Custom
* **Homebridge-UniFi-Protect Plugin Version:** Current
* **UniFi Protect Version:** 1.17.3
* **UniFi Protect Controller Type:** UDM Pro
* **UniFi Protect Controller Firmware Version:** 1.8.6
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:** Custom
* **Operating System and OS Version:** Custom
