text: Title: DateTime library uses deprecated `datetime.utcnow()`
  Body: [datetime.datetime.utcnow()](https://docs.python.org/3/library/datetime.html#datetime.datetime.utcnow) has been deprecated in Python 3.12 and `datetime.datetime.now(datetime.UTC)` should be used instead. That `datetime.UTC` is new in Python 3.11, so we need to use either version or feature detection to avoid using it with earlier Python versions.