Detected blocking call to open inside the event loop by custom integration 'ui_lovelace_minimalist'

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

Install integration
Go to configuration of integration
Select "Include Custom Cards" or/and "Select Community Cards"

Expected behavior That selected options will be applied to Lovelace.

Screenshots If applicable, add screenshots to help explain your problem.

Additional context For "Include Custom Cards" HA is just running normally and at the end I'm getting error "Unknown error occurred". But when I select also "Select Community Cards" and want to save that, HA is eating a lot of RAM (I had 4GB, it ate it all, I expanded to 8GB, it ate it all... I expanded to 12GB and also HA ate it all during saving configuration of Lovelace)

Related Logs (can be found in the browser-console (F12)) Add related logs for the problem

Related Card Config It's fresh installation, so I didn't make any additional configuration yet.

2024-06-24 20:46:15.380 WARNING (MainThread) [homeassistant.util.loop] Detected blocking call to open inside the event loop by custom integration 'ui_lovelace_minimalist' at custom_components/ui_lovelace_minimalist/base.py, line 438: shutil.copy2( (offender: /usr/local/lib/python3.12/shutil.py, line 260: with open(src, 'rb') as fsrc:), please create a bug report at https://github.com/UI-Lovelace-Minimalist/UI/issues
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/usr/src/homeassistant/homeassistant/__main__.py", line 223, in <module>
    sys.exit(main())
  File "/usr/src/homeassistant/homeassistant/__main__.py", line 209, in main
    exit_code = runner.run(runtime_conf)
  File "/usr/src/homeassistant/homeassistant/runner.py", line 190, in run
    return loop.run_until_complete(setup_and_run_hass(runtime_config))
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 672, in run_until_complete
    self.run_forever()
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 639, in run_forever
    self._run_once()
  File "/usr/local/lib/python3.12/asyncio/base_events.py", line 1988, in _run_once
    handle._run()
  File "/usr/local/lib/python3.12/asyncio/events.py", line 88, in _run
    self._context.run(self._callback, *self._args)
  File "/usr/src/homeassistant/homeassistant/setup.py", line 165, in async_setup_component
    result = await _async_setup_component(hass, domain, config)
  File "/usr/src/homeassistant/homeassistant/setup.py", line 447, in _async_setup_component
    await asyncio.gather(
  File "/usr/src/homeassistant/homeassistant/setup.py", line 449, in <genexpr>
    create_eager_task(
  File "/usr/src/homeassistant/homeassistant/util/async_.py", line 37, in create_eager_task
    return Task(coro, loop=loop, name=name, eager_start=True)
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 742, in async_setup_locked
    await self.async_setup(hass, integration=integration)
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 594, in async_setup
    result = await component.async_setup_entry(hass, self)
  File "/config/custom_components/ui_lovelace_minimalist/__init__.py", line 124, in async_setup_entry
    return await async_initialize_integration(hass=hass, config_entry=config_entry)
  File "/config/custom_components/ui_lovelace_minimalist/__init__.py", line 104, in async_initialize_integration
    startup_result = await async_startup()
  File "/config/custom_components/ui_lovelace_minimalist/__init__.py", line 93, in async_startup
    not await ulm.configure_ulm()
  File "/config/custom_components/ui_lovelace_minimalist/base.py", line 438, in configure_ulm
    shutil.copy2(

UI-Lovelace-Minimalist / UI

Detected blocking call to open inside the event loop by custom integration 'ui_lovelace_minimalist' #1509