datetime.datetime.utcfromtimestamp() deprecation warning

[woodmicha]

Subject (for new issue): Request: Please tag a new release to include [commit:
142578c, hash=142578c9474d190d2c45e55172d99d41d41d8a27] (Fixes Deprecation Warning)

Hello maintainers,

Thank you for merging [142578c]! I see the fix for the deprecation warning in fitparse/processors.py is now in the main branch.

However, I'm still seeing the warning because the fix does not seem to be included in the latest PyPI release ([1.2.0]).

Would you be able to cut a new release soon so we can benefit from this fix? This would be a huge help for my project!

Thank you for your time and effort maintaining this library.