Bump ruby/setup-ruby from 1.278.0 to 1.280.0 in the dependencies group

Bump ruby/setup-ruby from 1.278.0 to 1.280.0 in the dependencies group

Bumps the dependencies group with 1 update: [ruby/setup-ruby](https://github.com/ruby/setup-ruby).

Updates `ruby/setup-ruby` from 1.278.0 to 1.280.0
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](https://github.com/ruby/setup-ruby/compare/4c24fa5ec04b2e79eb40571b1cee2a0d2b705771...d5f787ce339eb0767271bc01d922e85644c2c8ab)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.280.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

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