⬆️ Bump concurrent-ruby from 1.2.2 to 1.2.3 (#133)

Bumps [concurrent-ruby](https://github.com/ruby-concurrency/concurrent-ruby) from 1.2.2 to 1.2.3.
- [Release notes](https://github.com/ruby-concurrency/concurrent-ruby/releases)
- [Changelog](https://github.com/ruby-concurrency/concurrent-ruby/blob/master/CHANGELOG.md)
- [Commits](ruby-concurrency/concurrent-ruby@v1.2.2...v1.2.3)

---
updated-dependencies:
- dependency-name: concurrent-ruby
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>