New version of Holidays requires some updates

[Calabashmc]

Latest version of holidays changes a few things.
e.g. pyholidays.CountryHoliday(country_name, years=[start_time.year], prov=province, state=state).keys())
should be
pyholidays.country_holidays(country_name, years=[start_time.year], subdiv=province).keys())

https://python-holidays.readthedocs.io/en/latest/api.html