Send an event to Azure Event Hub authenticating via Service Principal throws "azure.eventhub.exceptions.EventHubError: get_token must be a coroutine function" error

[rbuenoc]

• Package Name: azure-eventhub
• Package Version: 5.10.1
• Operating System: Windows
• Python Version: 3.9.4

Describe the bug
Trying to send an event to Azure Event Hub authenticating via Service Principal throws "azure.eventhub.exceptions.EventHubError: get_token must be a coroutine function" error

To Reproduce
Steps to reproduce the behavior:

1. Install requirements

azure-identity==1.10.0
azure-eventhub==5.10.1

2. Run the following code, replacing the corresponding variables.

import asyncio
from azure.identity import ClientSecretCredential
from azure.eventhub.aio import EventHubProducerClient
from azure.eventhub import EventData

async def run():
    credentials = ClientSecretCredential('<tenant-id>', '<application-id>', '<secret-key>')
    producer = EventHubProducerClient('<fully-qualified-namespace>', '<eventhub-name>', credentials)
    async with producer:
        event_data_batch = await producer.create_batch()
        event_data_batch.add(EventData('First event '))
        event_data_batch.add(EventData('Second event'))
        event_data_batch.add(EventData('Third event'))

        await producer.send_batch(event_data_batch)

loop = asyncio.get_event_loop()
loop.run_until_complete(run())

Expected behavior
Code running successfully and message sent to Azure Event Hub without any error.