input: Write a python function to check if the current time is past due and log appropriate messages.
  assert check_past_due(datetime.datetime(2023, 10, 1, 12, 0, tzinfo=datetime.timezone.utc), datetime.datetime(2023, 10, 1, 11, 0, tzinfo=datetime.timezone.utc)) == 'The timer is past due!'
  assert check_past_due(datetime.datetime(2023, 10, 1, 11, 0, tzinfo=datetime.timezone.utc), datetime.datetime(2023, 10, 1, 12, 0, tzinfo=datetime.timezone.utc)) == 'Python timer trigger function ran at 2023-10-01T11:00:00+00:00'
output: import datetime
  
  def check_past_due(current_time, scheduled_time):
      if current_time > scheduled_time:
          return 'The timer is past due!'
      else:
          return f'Python timer trigger function ran at {current_time.isoformat()}'