Limit jupyterlab [skip ci]

[nfahlgren]

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Type of update
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• Bug fix
• New feature or feature enhancement
• Update to documentation
• Work in progress

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For the reviewer
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• PR functionality reviewed in a Jupyter Notebook
• All tests pass
• Test coverage remains 100%
• Documentation tested
• New documentation pages added to plantcv/mkdocs.yml
• Changes to function input/output signatures added to updating.md
• Code reviewed
• PR approved

[skip ci]