flox: Test failure on i386

A very large number of tests fail on i386 architectures (full log can be found here). In all cases the issue seems to be related to a data type mismatch.

Is this considered a real issue?

============================= test session starts ==============================
platform linux -- Python 3.10.9, pytest-7.2.0, pluggy-1.0.0+repack
rootdir: /builds/debian-gis-team/flox/debian/output/source_dir, configfile: pyproject.toml
collected 8076 items / 48 deselected / 8028 selected

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=================================== FAILURES ===================================

[CUT]

FAILED ../../../tests/test_core.py::test_multiple_groupers[False-by22-by11-expected_groups1] - AssertionError: a and b have different dtypes: (a: int64, b: int32)
FAILED ../../../tests/test_core.py::test_multiple_groupers[False-by22-by11-expected_groups2] - AssertionError: a and b have different dtypes: (a: int64, b: int32)
FAILED ../../../tests/test_core.py::test_factorize_reindex_sorting_strings - AssertionError: a and b have different dtypes: (a: int32, b: int64)
FAILED ../../../tests/test_core.py::test_factorize_reindex_sorting_ints - AssertionError: a and b have different dtypes: (a: int32, b: int64)
= 1181 failed, 2884 passed, 1641 skipped, 48 deselected, 2319 xfailed, 3 xpassed, 64 warnings in 292.84s (0:04:52) =