Python Lambda does not support multi-type hinting

[alexiswl]

[ERROR] TypeError: unsupported operand type(s) for |: 'type' and 'type'
Traceback (most recent call last):
  File "/var/lang/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 850, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/var/task/lambda_code.py", line 293, in <module>
    def submit_library_to_pieriandx(subject_id: str, library_id: str, workflow_run_id: str, lambda_arn: str, panel_type: str, sample_type: str, is_identified: Union[bool | str], default_snomed_term: str):