CI: Posix / pytest failing in test_unique.py
Posix / pytest (actions-38-minimum_versions.yaml, not slow and not network and not clipboard) failing at test_unique.py::test_unique_bad_unicode[idx_or_series_w_bad_unicode0]

    `UnicodeEncodeError: 'utf-8' codec can't encode character '\ud83d' in position 84: surrogates not allowed`

(I believe that  \ud83d is a smily face character...)