[Bug]: Source Bielefeld doesn't work anymore after restart

[ptC7H12]

I Have A Problem With:

A specific source

What's Your Problem

After a restart the source bielefeld_de doesn't work anymore.

Tried both fixes: from #3629
but only worked until restart.

I've switched back to 2.5.0 and all is working fine.

Source (if relevant)

bielefeld_de

Logs

Logger: custom_components.waste_collection_schedule.waste_collection_schedule.source_shell
Quelle: custom_components/waste_collection_schedule/waste_collection_schedule/source_shell.py:226
Integration: Waste Collection Schedule ([Dokumentation](https://github.com/mampfes/hacs_waste_collection_schedule#readme))
Erstmals aufgetreten: 08:27:49 (2 Vorkommnisse)
Zuletzt protokolliert: 08:27:49

error loading source bielefeld_de: cannot import name 'use_pytz' from 'icalendar' (/usr/local/lib/python3.13/site-packages/icalendar/__init__.py) Traceback (most recent call last): File "/config/custom_components/waste_collection_schedule/waste_collection_schedule/source_shell.py", 
line 217, in create source_module: SourceModule = importlib.import_module( ~~~~~~~~~~~~~~~~~~~~~~~^ f"waste_collection_schedule.source.{source_name}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/usr/src/homeassistant/homeassistant/util/loop.py", 
line 200, in protected_loop_func return func(*args, **kwargs) File "/usr/local/lib/python3.13/importlib/__init__.py", 
line 88, in import_module return _bootstrap._gcd_import(name[level:], package, level) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "<frozen importlib._bootstrap>", line 1387, in _gcd_import File "<frozen importlib._bootstrap>", 
line 1360, in _find_and_load File "<frozen importlib._bootstrap>", 
line 1331, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", 
line 935, in _load_unlocked File "<frozen importlib._bootstrap_external>", 
line 1026, in exec_module File "<frozen importlib._bootstrap>", 
line 488, in _call_with_frames_removed File "/config/custom_components/waste_collection_schedule/waste_collection_schedule/source/bielefeld_de.py", 
line 6, in <module> from waste_collection_schedule.service.ICS import ICS File "/config/custom_components/waste_collection_schedule/waste_collection_schedule/service/ICS.py", 
line 7, in <module> from icalevents import icalevents File "/usr/local/lib/python3.13/site-packages/icalevents/icalevents.py", 
line 3, in <module> from .icalparser import parse_events, Event File "/usr/local/lib/python3.13/site-packages/icalevents/icalparser.py", 
line 18, in <module> from icalendar import use_pytz ImportError: cannot import name 'use_pytz' from 'icalendar' (/usr/local/lib/python3.13/site-packages/icalendar/__init__.py)

Relevant Configuration

Checklist Source Error

• Use the example parameters for your source (often available in the documentation) (don't forget to restart Home Assistant after changing the configuration)
• Checked that the website of your service provider is still working
• Tested my attributes on the service provider website (if possible)
• I have tested with the latest version of the integration (master) (for HACS in the 3 dot menu of the integration click on "Redownload" and choose master as version)

Checklist Sensor Error

• Checked in the Home Assistant Calendar tab if the event names match the types names (if types argument is used)

Required

• I have searched past (closed AND opened) issues to see if this bug has already been reported, and it hasn't been.
• I understand that people give their precious time for free, and thus I've done my very best to make this problem as easy as possible to investigate.

[lichtteil]

I have the same problem with Freiburg using Abfall.IO.

[Kuechenfenster]

same with St.Wendel; gone after restart

[ptC7H12]

same with St.Wendel; gone after restart

For me a restart didn't help!
V 2.5.0 works as it should

[ptC7H12]

Strange another re-download from hacs solved it for me. Did it before and it did not work. Now it worked, even after another restart...