Bump VERSION to 1.42.1

Diff

v1.42.0...f8c3a7a7

Checklist

• Diff link is up-to-date.
• Check the release notes: https://gitlab.com/api/v4/projects/3430480/repository/changelog?version=1.42.1
• Based on the diff and the release notes, version.rb is updated, according to SemVer.