treeprint 2.1.1 needs an upper bound on spotlib
treeprint 2.1.1 needs an upper bound on spotlib

See https://github.com/ocaml/opam-repository/pull/22386
Leonidas-from-XIV/opam-repository,ocaml/opam-repository,nberth/opam-repository,ocaml/opam-repository,pirbo/opam-repository,Leonidas-from-XIV/opam-repository,pirbo/opam-repository,nberth/opam-repository