Bump ruby/setup-ruby from 1.310.0 to 1.312.0 in the dependencies group

Bump ruby/setup-ruby from 1.310.0 to 1.312.0 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 1.310.0 to 1.312.0
- [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/afeafc3d1ab54a631816aba4c914a0081c12ff2f...12fd324f1d0b43274fdc8130f6980590a667c455)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.312.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>