Update humann to 3.1.0 (#35990)
Update humann to 3.1.0 (#35990)

* Update humann to 3.1.0

* Setting minimum MetaPhlAn version to 3.1

Co-authored-by: Francesco Asnicar <b316fe39d8ecce0ddd8ccd9eb95142e027eec519@gmail.com>
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