Update required node version to 18.16.0 or later

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/106898



Merged-by: Vitaly Slobodin <vslobodin@gitlab.com>
Approved-by: David Dieulivol <ddieulivol@gitlab.com>
Approved-by: Vitaly Slobodin <vslobodin@gitlab.com>
Co-authored-by: Lukas Eipert <leipert@gitlab.com>