Bump ruby/setup-ruby from 1.279.0 to 1.280.0 (#8359)

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.279.0 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/b90be12699fdfcbee4440c2bba85f6f460446bb0...d5f787ce339eb0767271bc01d922e85644c2c8ab)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
3 files changed