We want to drop support for EOL Ruby versions. - [ ] Update [Ruby versions on CI](https://github.com/faker-ruby/faker/blob/65e5bb959e14e57d4cdc002dcdb515ee99dcb497/.github/workflows/ruby.yml#L37) to only run with `ruby >= 2.7`. See #2522 for more details.