Fix no attribute EVENT_PERSISTENT_NOTIFICATIONS_UPDATED

[frenck]

Description

The following error occurs:

2023-10-25 22:02:45.618 ERROR (MainThread) [homeassistant.components.sensor] Error while setting up spook platform for sensor
Traceback (most recent call last):
  File "/home/frenck/code/home-assistant/core/homeassistant/helpers/entity_platform.py", line 359, in _async_setup_platform
    await asyncio.shield(task)
  File "/home/frenck/code/home-assistant/core/config/custom_components/spook/sensor.py", line 22, in async_setup_entry
    await async_forward_platform_entry_setups_to_ectoplasm(
  File "/home/frenck/code/home-assistant/core/config/custom_components/spook/util.py", line 32, in async_forward_platform_entry_setups_to_ectoplasm
    module = importlib.import_module(f".{module_path}", __package__)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/frenck/.pyenv/versions/3.11.4/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/home/frenck/code/home-assistant/core/config/custom_components/spook/ectoplasms/homeassistant/sensor.py", line 380, in <module>
    persistent_notification.EVENT_PERSISTENT_NOTIFICATIONS_UPDATED,
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'homeassistant.components.persistent_notification' has no attribute 'EVENT_PERSISTENT_NOTIFICATIONS_UPDATED'

Motivation and Context

Fix that darn error.

How has this been tested?

With a lot of tears

Screenshots (if appropriate):

Nah, so much wasted disk space for that.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

oh it fixes #425

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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