update ruby version to v2.3.4 to v2.3.5, v2.4.1 to v2.4.2
update ruby version to v2.3.4 to v2.3.5, v2.4.1 to v2.4.2

mvz/bundler,dilumnavanjana/bundler,mvz/bundler,dilumnavanjana/bundler,bundler/bundler,bundler/bundler