Add ipywidgets install for plotly

[vinegar-tom]

I am using just an install of JupyterLab, not through Anaconda, and I needed to also install ipywidgets for Plotly to work. This is mentioned in their documentation: https://plotly.com/python/getting-started/#jupyterlab-support

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Please briefly summarise the changes made in the pull request, and the reason(s) for making these changes.
I am using just an install of JupyterLab, not through Anaconda, and I needed to also install ipywidgets for Plotly to work. This is mentioned in their documentation. When I initially ran the Plotly plots, they were just blank boxes.

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[github-actions]

Thank you!

Thank you for your pull request 😃

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⏱️ Updated at 2024-11-05 16:51:26 +0000

[chennesy]

@vinegar-tom Thanks for the update, Mark! This was an oversight that's great to see addressed.