Fix for the new version of enocean-mqtt

[olivierkeke]

Since enocean-mqtt now requires paho-mqtt >= 2.0, these changes are needed.

[madejackson]

I tried to run HA_enoceanmqtt with this PR.

Does not work. Spits out following error:

Exception in thread paho-mqtt-client-enocean_gateway:
Traceback (most recent call last):
File "/usr/local/lib/python3.12/threading.py", line 1075, in _bootstrap_inner
self.run()
File "/usr/local/lib/python3.12/threading.py", line 1012, in run
self._target(*self._args, **self._kwargs)
File "/usr/local/lib/python3.12/site-packages/paho_mqtt-2.1.0-py3.12.egg/paho/mqtt/client.py", line 4523, in _thread_main
self.loop_forever(retry_first_connection=True)
File "/usr/local/lib/python3.12/site-packages/paho_mqtt-2.1.0-py3.12.egg/paho/mqtt/client.py", line 2297, in loop_forever
rc = self._loop(timeout)
^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/paho_mqtt-2.1.0-py3.12.egg/paho/mqtt/client.py", line 1686, in _loop
rc = self.loop_read()
^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/paho_mqtt-2.1.0-py3.12.egg/paho/mqtt/client.py", line 2100, in loop_read
rc = self._packet_read()
^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/paho_mqtt-2.1.0-py3.12.egg/paho/mqtt/client.py", line 3142, in _packet_read
rc = self._packet_handle()
^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/paho_mqtt-2.1.0-py3.12.egg/paho/mqtt/client.py", line 3814, in _packet_handle
return self._handle_connack()
^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/paho_mqtt-2.1.0-py3.12.egg/paho/mqtt/client.py", line 3922, in _handle_connack
on_connect(
TypeError: HACommunicator._on_connect() missing 1 required positional argument: 'properties'

[olivierkeke]

It seems paho-mqtt developers have reversed on 2.1.0 the changes made in 2.0.0: eclipse-paho/paho.mqtt.python#831

So this PR will only work with paho-mqtt==2.0

Have you tried paho-mqtt==2.1 without this PR?