CI failing for ``test_repartition_quantiles``

[rjzamora]

dask_expr/tests/test_quantiles.py::test_repartition_quantiles is failing locally for me in main. The failure is also showing up in CI:

E               AssertionError: Series.index are different
E               
E               Series.index values are different (16.66667 %)
E               [left]:  Index([0.0, 0.2, 0.4, 0.6000000000000001, 0.8, 1.0], dtype='float64')
E               [right]: Index([0.0, 0.2, 0.4, 0.6, 0.8, 1.0], dtype='float64')

[rjzamora]

Looks like the cause is numpy:

np.linspace(0, 1, 6)[3]  # Returns: 0.6000000000000001

[rjzamora]

This is probably not new in numpy. This may only be failing now, because the check_exact default changed from False to True in assert_frame_equal for pandas 2.2 (https://pandas.pydata.org/docs/reference/api/pandas.testing.assert_frame_equal.html#pandas-testing-assert-frame-equal)