Failed to cache snapshot / Homebridge
# Bug Report
I consistently get errors in the log file, especially whenever my ring detects motion.

### Describe the Bug
First and foremost, thank you for the plugin and the integration of RING into Homekit. However, I have 1-2 problems with the whole issue.

From time to time it happens (see 2nd logfile) that I want to watch a live video (camera) via the Homekit-App (original Apple), but only the loading bar turns and then I get the error message as shown in the log. 

Another problem is that I get a lot of error messages in the log about Snapshot, even though I have disabled the function.

### Expected behavior
I would like to go into my Homekit app normally, click on the camera and see a live image/video. 

### Screenshots/Logs

[28/12/2020, 23:16:23] [Ring] Haustür Detected Motion
[28/12/2020, 23:17:07] [Ring] Snapshot for Haustür failed to refresh after 70 attempts.  This is normal behavior since this camera is unable to capture snapshots while streaming
[28/12/2020, 23:17:07] [Ring] Failed to cache snapshot for Haustür (44.45s), The camera currently reports that it is online
[28/12/2020, 23:17:07] [Ring] Failed to cache snapshot for Haustür (44.442s), The camera currently reports that it is online

**OTHER**

[29/12/2020, 00:25:50] [Ring] Preparing Live Stream for Haustür
[29/12/2020, 00:25:51] [Ring] Stream Prepared for Haustür (1.458s)
[29/12/2020, 00:25:51] [Ring] Streaming active for Haustür
[29/12/2020, 00:26:20] [Ring] Stopped Live Stream for Haustür
[29/12/2020, 00:26:31] [Ring] Snapshot for Haustür failed to refresh after 70 attempts.  This is normal behavior since this camera is unable to capture snapshots while streaming
[29/12/2020, 00:26:31] [Ring] Failed to cache snapshot for Haustür (43.145s), The camera currently reports that it is online

### Homebridge Ring Config
{
            "refreshToken": "XXXXXXXXXXXXXXXXXXXXXX",
            "avoidSnapshotBatteryDrain": false,
            "platform": "Ring"

### Environment
 - OS: Homebridge
 - Node.js: v14.15.3
 - NPM: v6.14.9
 - homebridge-ring: v9.12.8
 - homebridge: v1.1.7