[fix] ray tune runs forever sometimes

[suzannejin]

sometimes, ray tune stays forever in running mode for some samples,
and then these samples don't progress. And stay in the same iteration forever.

[alessiovignoli]

this does not happen on github actions, i think is a cluster issue.

[mathysgrapotte]

Should be fix by using proper ressources declaration, see #154 @alessiovignoli

[mathysgrapotte]

Could also be linked to #155