Enable flexible pyarrow dependency

[d33bs]

Description

This change updates the version requirement for pyarrow to be unconstrained by new releases. Pyarrow's current version is v9.0.0 whereas the version specification within requirements.txt for pyctyominer is statically set to v8.0.0. There are no functional issues within pycytominer as-is, but this may potentially cause issues with cross-dependent libraries for developers as pyarrow versions continue to be released.

What is the nature of your change?

• Bug fix (fixes an issue).
• Enhancement (adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• This change requires a documentation update.

Checklist

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• I have read the CONTRIBUTING.md guidelines.
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• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• New and existing unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
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[gwaybio]

I don't think we need Faisal for this one