Update license_finder to latest version (6.14.2)

Closes #49

See merge request https://gitlab.com/gitlab-org/gitlab-omnibus-builder/-/merge_requests/233

Merged-by: Balasankar 'Balu' C <balasankar@gitlab.com>
Approved-by: Balasankar 'Balu' C <balasankar@gitlab.com>
Co-authored-by: Andrew Patterson <apatterson@github.com>