Fix coerce_to_pendulum() for python datetime.date coerce_to_pendulum could fail for a python datetime.date because pendulum.instance() will ignore the tz argument if the datetime passed in is already a Pendulum DateTime. If we use python datetime.combine instead of Pendulum DateTime.combine, pendulum.instance() will use the tz argument if given a naive datetime.
Fix coerce_to_pendulum() for python datetime.date
coerce_to_pendulum could fail for a python datetime.date because pendulum.instance() will ignore the tz
argument if the datetime passed in is already a Pendulum DateTime. If we use python datetime.combine
instead of Pendulum DateTime.combine, pendulum.instance() will use the tz argument if given a naive
datetime.

RudolfCardinal/pythonlib,RudolfCardinal/pythonlib