iOS 14 beta no doorbell notification
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my iPhone X running iOS 14 beta 2 (public beta) does not receive notifications when the doorbell is rung. All devices running iOS 13 and MacOS 10.15.5 still receive the notification. Don't know if the issue is with homebridge or iOS. Have also submitted bug report to Apple.
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**To Reproduce:**
send HTTP or MQTT doorbell message to camera configured with doorbell:true.
<!-- Steps to reproduce the behavior. -->

**Expected behavior:**
receive notification
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**Logs:**
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```
[7/15/2020, 12:00:38 PM] [Camera-ffmpeg] Snapshot from Vestibule at 480:270
[7/15/2020, 12:00:50 PM] [Camera-ffmpeg] Switch Doorbell On: Vestibule
[7/15/2020, 12:00:50 PM] [Camera-ffmpeg] Snapshot from Vestibule at 480:270
[7/15/2020, 12:00:50 PM] [Camera-ffmpeg] Snapshot from Vestibule at 1280:720
```

**Homebridge Config:**

```json
 {
            "mqtt": "127.0.0.1",
            "portmqtt": 1883,
            "usermqtt": "xxxx",
            "passmqtt": "xxxx",
            "topic": "homebridge",
            "porthttp": 1886,
            "cameras": [
                {
                    "name": "Vestibule",
                    "manufacturer": "Wyze",
                    "model": "Cam v2",
                    "doorbell": true,
                    "videoConfig": {
                        "source": "-re -i rtsp://misha:xxxxx@10.0.1.218/live",
                        "stillImageSource": "-i rtsp://misha:xxxxx@10.0.1.218/live -vframes 1 -r 1",
                        "vcodec": "libx264",
                        "videoFilter": "transpose=1",
                        "debug": false
                    }
                }
            ],
            "platform": "Camera-ffmpeg"
        }
```

**Screenshots:**
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**Environment:**

* **Node.js Version**: 12.16.2
* **NPM Version**: 6.14.4
* **Homebridge Version**: 1.1.1
* **Homebridge Camera FFmpeg Version**:2.3.1-beta.4
* **Homebridge Config UI X Plugin Version**:4.23.2
* **Operating System**: Raspbian Stretch (9)


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