Add tzdata requirement

[sander-visser]

Observed tzdata is required on clean 3.12.7 install

[Danielhiversen]

Hmm, it runs fine without here: https://github.com/Danielhiversen/pyTibber/actions/runs/11784806241/job/32824730048

[sander-visser]

If I run:
python -m pip uninstall tzdata

I get an error running the example:

File "PATH\site-packages\tibber_init_.py", line 66, in init
self.time_zone: dt.tzinfo = time_zone or zoneinfo.ZoneInfo("UTC")
^^^^^^^^^^^^^^^^^^^^^^^^
File "PATH\Lib\zoneinfo_common.py", line 24, in load_tzdata
raise ZoneInfoNotFoundError(f"No time zone found with key {key}")
zoneinfo._common.ZoneInfoNotFoundError: 'No time zone found with key UTC'

[sander-visser]

If I init with time_zone=datetime.timezone.utc then tzdata is not required - maybe you can fallback on that instead...

[sander-visser]

Using you py package to analyze my peak power usage excl EV charging (looking forward to you merging access to more historic consumption (by setting start data towards tibber api)

https://github.com/sander-visser/py-playground/blob/main/tibber_easee_peak_power_analyzer.py

python c:\Temp\tibber_easee_peak_power.py
Scanning home of Sander Visser
Scanning peak power from 2024-10-20 21:00:00Z to 2024-11-20 20:00:00Z
Found power peak 5.535 kWh/h to have occured at 2024-11-20T02:00:00+00:00
Found power peak 5.496 kWh/h to have occured at 2024-11-08T01:00:00+00:00
Found power peak 5.092 kWh/h to have occured at 2024-10-30T03:00:00+00:00

[Danielhiversen]

I wonder if this is only needed for Windows?
Maybe it would be better to change to datetime.timezone.utc instead