fix(deps): update dependency datafusion to v39

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
datafusion (source)	>=0.6,<39 -> >=0.6,<40

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Release Notes

apache/datafusion-python (datafusion)

v39.0.0

Compare Source

Merged pull requests:

• ci: add substrait feature to linux builds #​720 (Michael-J-Ward)
• Docs deploy action #​721 (Michael-J-Ward)
• update deps #​723 (Michael-J-Ward)
• Upgrade maturin #​725 (Michael-J-Ward)
• Upgrade datafusion 39 #​728 (Michael-J-Ward)
• use ScalarValue::to_pyarrow to convert to python object #​731 (Michael-J-Ward)
• Pyo3 Bound<'py, T> api #​734 (Michael-J-Ward)
• github test action: drop python 3.7, add python 3.12 #​736 (Michael-J-Ward)
• Pyarrow filter pushdowns #​735 (Michael-J-Ward)
• build(deps): bump syn from 2.0.66 to 2.0.67 #​738 (dependabot[bot])
• Pyo3 refactorings #​740 (Michael-J-Ward)
• UDAF sum workaround #​741 (Michael-J-Ward)

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