message: refactor(shared-data): add off deck to python v6 schema file as param
diff: from pydantic import BaseModel, Field, validator
  -from typing import Any, List, Optional, Dict
  +from typing import Any, List, Optional, Dict, Union
  from typing_extensions import Literal
  from enum import Enum
  from opentrons_shared_data.labware.labware_definition import LabwareDefinition
  @@ -38,7 +38,7 @@ class Params(BaseModel):
  pipetteId: Optional[str]
  mount: Optional[str]
  moduleId: Optional[str]
  - location: Optional[Location]
  + location: Optional[Union[Location, Literal["offDeck"]]]
  labwareId: Optional[str]
  displayName: Optional[str]
  liquidId: Optional[str]
  @@ -67,7 +67,7 @@ class Params(BaseModel):
  # there is moveLabware support in PAPIv2, this is only to unblock
  # internal testing of LPC with JSON protocols that include
  # 'moveLabware' commands in the meantime
  - newLocation: Optional[Location]
  + newLocation: Optional[Union[Location, Literal["offDeck"]]]
  strategy: Optional[str]
  