SMA Integration not logging out when shutting down Home Assistant

[tomlut]

The problem

After a number of restarts the SMA Solar integration stops connecting.

Visiting the SMA Inverter web interface results in a message saying that too many users are logged in and to wait for someone to log out.

What is version of Home Assistant Core has the issue?

core-2021.7.2

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

sma

Link to integration documentation on our website

https://www.home-assistant.io/integrations/sma/

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Logger: pysma
Source: /usr/local/lib/python3.9/site-packages/pysma/__init__.py:253
First occurred: 21:28:50 (1 occurrences)
Last logged: 21:28:50

Could not start session, Max amount of sessions reached, got {}

Logger: homeassistant.config_entries
Source: components/sma/__init__.py:147
First occurred: 21:28:50 (1 occurrences)
Last logged: 21:28:50

Error setting up entry 10.1.1.230 for sma
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 293, in async_setup
    result = await component.async_setup_entry(hass, self)  # type: ignore
  File "/usr/src/homeassistant/homeassistant/components/sma/__init__.py", line 147, in async_setup_entry
    device_info = await sma.device_info()
  File "/usr/local/lib/python3.9/site-packages/pysma/__init__.py", line 357, in device_info
    await self.read(self._device_info_sensors)
  File "/usr/local/lib/python3.9/site-packages/pysma/__init__.py", line 287, in read
    result_body = await self._read_body(URL_VALUES, payload)
  File "/usr/local/lib/python3.9/site-packages/pysma/__init__.py", line 200, in _read_body
    await self.new_session()
  File "/usr/local/lib/python3.9/site-packages/pysma/__init__.py", line 259, in new_session
    raise SmaAuthenticationException()
pysma.exceptions.SmaAuthenticationException

### Additional information

_No response_

[probot-home-assistant]

sma documentation
sma source
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[probot-home-assistant]

Hey there @kellerza, @rklomp, mind taking a look at this issue as its been labeled with an integration (sma) you are listed as a codeowner for? Thanks!
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[rklomp]

This should be fixed once #52973 is merged and a new home assistant version containing this change is released.