`licensed` fails to find gem's license if it's a default gem (see: https://stdgems.org) and the version you're requiring comes with the ruby version you're using.
A ruby upgrade or any change to Gemfile could trigger `licensed` failures, so it's better to ignore all default gems we're using.
1. Add `cgi` (ruby terms)
2. Move `strscan`, ~~`ruby2_keywords`, and `openssl`~~ to "reviewed" section (update: two of those are postponed, need to debug stuff in our docker image)
3. Sort
