Updates the Gismeteo custom component to fix compatibility issues with current Home Assistant versions and resolve config flow errors

[italo-lombardi]

Proposed change

Critical Fixes

• Fixed config flow 500 error: Removed custom __init__ in OptionsFlowHandler that was attempting to set the read-only config_entry property, which is automatically provided by the base class
• Replaced deprecated async_timeout: Migrated from async_timeout.timeout to asyncio.timeout (Python 3.11+)
• Updated cached_property import: Changed from functools.cached_property to propcache.api.cached_property per Home Assistant requirements

Code Quality Improvements

• Added -> None return type hints to all __init__ methods for pylint compliance
• Removed unused _update_options method that was no longer called

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (which adds functionality to an this integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example entry for configuration.yaml:

# Example configuration.yaml

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• The code has been formatted using Black (black --fast custom_components)

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated to README.md