Update nvm-check.sh as `lts/hydrogen` will never === `18.18.6` 馃槄
lts/hydrogen
will never === 18.18.6
so I've updated the nvm-check.sh to silently switch to the right version and install if its not the right one.
added an install-no-prereq make entry too, mostly for gcd-drupal sake
also updated the yarn lock file whilst it was running on the docker container