Plotly 5.13.1 introduces undeclared dependency to 'packaging'

[gabcarray]

Plotly 5.13.1 introduces a new dependency to the library 'packaging' without declaring it in environment.yml, which leads to crashes when running go.Figure.show(), unless packaging is installed externally.

This was discovered in python 3.8 in windows.

Snippet for reproduction:

pip install plotly==5.13.1

import plotly.graph_objects as go

def main():
    fig = go.Figure()
    fig.show()


if __name__ == "__main__":
    main()

Error message:

Traceback (most recent call last):
  File "CENSORED_PATH", line 9, in <module>
    main()
  File "CENSORED_PATH.py", line 5, in main
    fig.show()
  File "CENSORED_PATH\plotly\basedatatypes.py", line 3390, in show
    return pio.show(self, *args, **kwargs)
  File "CENSORED_PATH\_plotly_utils\importers.py", line 36, in __getattr__
    class_module = importlib.import_module(rel_module, parent_name)
  File "CENSORED_PATH\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "CENSORED_PATH\plotly\io\_renderers.py", line 7, in <module>
    from packaging.version import Version
ModuleNotFoundError: No module named 'packaging'

[AaronStiff]

Hi @gabcarray. This is a known issue (see #4080) but will be patched in the next release as per #4113