Facing test issues on PPC64LE architecture.

[vinodk99]

While executing tests for the version:v5.9.2 facing test issues,community need to update the source code:

`================================================================== test session starts ================================================================== platform linux -- Python 3.11.2, pytest-7.4.3, pluggy-1.3.0 rootdir: /nbformat configfile: pyproject.toml testpaths: tests/ plugins: anyio-4.0.0 collected 189 items

tests/test_api.py ...... [ 3%] tests/test_convert.py ..... [ 5%] tests/test_nbformat.py ..... [ 8%] tests/test_reader.py ... [ 10%] tests/test_sign.py ................... [ 20%] tests/test_validator.py ..XX.............................................. [ 46%] tests/v1/test_json.py . [ 47%] tests/v1/test_nbbase.py ...... [ 50%] tests/v2/test_json.py ... [ 51%] tests/v2/test_nbbase.py ............. [ 58%] tests/v2/test_nbpy.py . [ 59%] tests/v3/test_json.py ........... [ 65%] tests/v3/test_misc.py . [ 65%] tests/v3/test_nbbase.py ...................... [ 77%] tests/v3/test_nbpy.py ..... [ 79%] tests/v4/test_convert.py ...... [ 83%] tests/v4/test_json.py ............. [ 89%] tests/v4/test_nbbase.py .............. [ 97%] tests/v4/test_validate.py ..... [100%]

=================================================================== warnings summary ==================================================================== ../usr/local/lib/python3.11/site-packages/jupyter_core/application.py:22 /usr/local/lib/python3.11/site-packages/jupyter_core/application.py:22: DeprecationWarning: Jupyter is migrating its paths to use standard platformdirs given by the platformdirs library. To remove this warning and see the appropriate new directories, set the environment variable JUPYTER_PLATFORM_DIRS=1 and then run jupyter --paths. The use of platformdirs will be the default in jupyter_core v6 from .paths import (

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html ================================================================= slowest 10 durations ================================================================== 0.76s call tests/test_sign.py::TestNotary::test_sign_stdin 0.12s call tests/test_sign.py::TestNotary::test_invalid_db_file 0.11s call tests/test_validator.py::test_nb2[jsonschema] 0.09s call tests/test_validator.py::test_future[fastjsonschema] 0.06s call tests/test_validator.py::test_invalid_validator_raises_value_error_after_read 0.06s call tests/test_validator.py::test_future[jsonschema] 0.06s call tests/test_api.py::TestAPI::test_read 0.05s call tests/test_validator.py::test_nb3[jsonschema] 0.05s call tests/test_api.py::TestAPI::test_capture_validation_error 0.05s call tests/test_validator.py::test_nb4jupyter_metadata_timings[fastjsonschema] ================================================================ short test summary info ================================================================ XPASS tests/test_validator.py::test_should_not_mutate[fastjsonschema] In the future we want to stop warning, and raise an error XPASS tests/test_validator.py::test_should_not_mutate[jsonschema] In the future we want to stop warning, and raise an error ======================================================= 187 passed, 2 xpassed, 1 warning in 2.81s =======================================================`

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