Fix numpy 2.4.0 compatibility in create_violin()

[Mr-Neutr0n]

Summary

Fixes #5461

The interpolation parameter was deprecated in numpy.percentile() and removed in numpy 2.4.0. It has been replaced with the method parameter which uses the same values.

Problem

create_violin() fails with numpy 2.4.0:

TypeError: percentile() got an unexpected keyword argument 'interpolation'

Solution

Changed all three np.percentile() calls in calc_stats() from using interpolation to method:

• interpolation="linear" → method="linear"
• interpolation="lower" → method="lower"
• interpolation="higher" → method="higher"

Changes

Modified plotly/figure_factory/_violin.py:

# Before
q2 = np.percentile(x, 50, interpolation="linear")
q1 = np.percentile(x, 25, interpolation="lower")
q3 = np.percentile(x, 75, interpolation="higher")

# After
q2 = np.percentile(x, 50, method="linear")
q1 = np.percentile(x, 25, method="lower")
q3 = np.percentile(x, 75, method="higher")

Test plan

import plotly.figure_factory as ff
fig = ff.create_violin(data=[1, 2, 3, 4, 5])
fig.show()  # Should work without error

Or run the existing test:

pytest tests/test_optional/test_figure_factory/test_figure_factory.py::TestViolin::test_violin_fig

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