Organisationsnomadic-labslwt-exit0f817a

Merge branch 'update-ocamlversions-in-ci' into 'master' Update ocaml versions in CI (incl ocaml5) See merge request nomadic-labs/lwt-exit!9

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*Variants labelled (experimental) are still undergoing testing; if they have failed it may be a bug in OCaml-CI.