Bump uvloop for sanic update

[indam23]

Proposed changes:

• Bump the required version of uvloop to accommodate Sanic version 21.12.1
• Fix the error when training in Rasa X with version 2.8.30

[2022-07-08 12:26:34 +0000] [1] [ERROR] Exception occurred while handling uri: 'http://rasa-worker:5005/model/train?force=true&save_to_default_model_directory=true&callback_url=http://rasa-x:5002/api/projects/default/models/jobs/7/result?token%3Drasaxtoken&token=rasatoken'
Traceback (most recent call last):
  File "handle_request", line 83, in handle_request
    )
  File "/opt/venv/lib/python3.8/site-packages/rasa/server.py", line 238, in decorated
    result = await result
  File "/opt/venv/lib/python3.8/site-packages/rasa/server.py", line 600, in decorated_function
    request.app.add_task(wrapped())
  File "/opt/venv/lib/python3.8/site-packages/sanic/app.py", line 1609, in add_task
    return self._loop_add_task(
  File "/opt/venv/lib/python3.8/site-packages/sanic/app.py", line 1565, in _loop_add_task
    task = loop.create_task(prepped, name=name)
TypeError: create_task() takes no keyword arguments

Status (please check what you already did):

• added some tests for the functionality
• updated the documentation
• updated the changelog (please check changelog for instructions)
• reformat files using black (please check Readme for instructions)