Bump ruby/setup-ruby from 1.263.0 to 1.264.0

Bump ruby/setup-ruby from 1.263.0 to 1.264.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.263.0 to 1.264.0.
- [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/0481980f17b760ef6bca5e8c55809102a0af1e5a...6797dcbb9a1889fd411d07e8aba7eded53fb8b48)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.264.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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