Garage door openers in perpetual opening / closing state in HomeKit -- 403 Forbidden errors
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**Describe The Problem:**
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When using HomeKit to interact with a garage door device added through the HomeBridge myQ plugin, the device stays in the perpetual "Opening..." state in the HomeKit app. When the garage door eventually decides to close on its own or HomeKit is used, the perpetual state "Closing..." is shown.

**To Reproduce:**
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Use HomeKit to open a garage door that is configured through the HomeBridge myQ plugin.

**Logs:**
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```
[Garage Door Hub] myQ API: https://account-devices-gdo.myq-cloud.com/api/v5.2/Accounts/.../door_openers/.../open Error: 403 Forbidden
[Garage Door Hub] myQ API: Unable to send the command to myQ servers. Acquiring a new access token.
[Garage Door Hub] myQ API: Successfully connected to the myQ API.
```
Testing the link referenced in the log message directly in a browser yields:
```
{"Error":{"Code":"UnsupportedApiVersion","Message":"The requested resource with API version '5.2' does not support HTTP method 'GET'."}}
```

**Homebridge Configuration:**

```json
        {
            "email": "...",
            "password": "...",
            "name": "Garage Door Hub",
            "platform": "myQ"
        }
```

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

* **Homebridge Version:** <!-- homebridge -V --> 1.2.5
* **Node Version:** <!-- node -v --> v14.15.1
* **Homebridge-myQ Plugin Version**: 2.6.2
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:**<!-- Type of Apple device you're using and associated OS version --> iOS 14.4 and macOS Big Sur 11.2
* **Operating System and OS Version:** <!-- Raspbian / Ubuntu / Debian / Windows / macOS / Docker --> Docker

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