Update ruby/setup-ruby action to v1.168.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
ruby/setup-ruby	action	minor	v1.167.0 -> v1.168.0

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Release Notes

ruby/setup-ruby (ruby/setup-ruby)

### [`v1.168.0`](https://togithub.com/ruby/setup-ruby/releases/tag/v1.168.0): Add ruby-3.2.3 [Compare Source](https://togithub.com/ruby/setup-ruby/compare/v1.167.0...v1.168.0) ##### What's Changed - Add ruby-3.2.3 by [@​ruby-builder-bot](https://togithub.com/ruby-builder-bot) in [https://github.com/ruby/setup-ruby/pull/565](https://togithub.com/ruby/setup-ruby/pull/565) **Full Changelog**: https://github.com/ruby/setup-ruby/compare/v1.167.0...v1.168.0

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Configuration

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🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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