pre final value should take precedent over previously seen values

[lomasger]

If a version has been bumped to 1.1.0 and a pre bump is then applied to that version e.g. 1.1.0-rc.1, then when 1.1.0-rc.1 is later bumped to final (e.g. to 1.1.0) then that final version does not take precedent in the version history as it has already been observed by Concourse.