message: fix(api): do not call a method dependent on the Python API Version directly
diff: @@ -575,11 +575,10 @@ class InstrumentContext(CommandPublisher):
  if not isinstance(loc, Well):
  raise TypeError('Last tip location should be a Well but it is: '
  '{}'.format(loc))
  + return_height = self._implementation.get_return_height()
  drop_loc = determine_drop_target(self.api_version,
  loc,
  - self.hw_pipette.get(
  - 'return_tip_height', 0.5
  - ),
  + return_height,
  APIVersion(2, 3))
  self.drop_tip(drop_loc, home_after=home_after)
  @@ -764,9 +763,10 @@ class InstrumentContext(CommandPublisher):
  if LabwareLike(location).is_fixed_trash():
  target = location.top()
  else:
  + return_height = self._implementation.get_return_height()
  target = determine_drop_target(self.api_version,
  location,
  - self.return_height)
  + return_height)
  elif not location:
  target = self.trash_container.wells()[0].top()
  else:
  