Vendor public_suffix data dir

[samford]

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---

This is a quick follow-up to #13300 to fix another vendored gem bug. This one only appeared when running brew livecheck on a formula with a using: :homebrew_curl URL (e.g., kim-api), which exercises the addressable code in Livecheck#use_homebrew_curl?:

No such file or directory @ rb_sysopen - /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/public_suffix-4.0.7/data/list.txt
/opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/public_suffix-4.0.7/lib/public_suffix/list.rb:51:in `read'
/opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/public_suffix-4.0.7/lib/public_suffix/list.rb:51:in `default'
/opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/public_suffix-4.0.7/lib/public_suffix.rb:67:in `parse'
/opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/public_suffix-4.0.7/lib/public_suffix.rb:141:in `domain'
/opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/addressable-2.8.0/lib/addressable/uri.rb:1234:in `domain'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:538:in `use_homebrew_curl?'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:671:in `block in latest_version'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:622:in `each'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:622:in `each_with_index'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:622:in `latest_version'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:276:in `block in run_checks'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:216:in `map'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:216:in `with_index'
/opt/homebrew/Library/Homebrew/livecheck/livecheck.rb:216:in `run_checks'
/opt/homebrew/Library/Homebrew/dev-cmd/livecheck.rb:115:in `livecheck'
/opt/homebrew/Library/Homebrew/brew.rb:110:in `<main>'

The addressable gem depends on the public_suffix gem and we also need to vendor the data dir from public_suffix for addressable to function correctly. This PR updates .gitignore and checks in the public_suffix-*/data directory.

Since public_suffix is only a dependency of addressable (we're not using is directly), do we need to add it to the Gemfile or is this fine as-is?

[BrewTestBot]

Review period skipped due to critical label.

[Bo98]

Since public_suffix is only a dependency of addressable (we're not using is directly), do we need to add it to the Gemfile or is this fine as-is?

This is fine.

[samford]

Thanks for the quick review, Bo!

This should be the last of the vendoring with respect to the addressable addition. At least I have a better idea of how to handle this type of situation in the future.