fix broken build on macos-latest

[shogo82148]

fix the following error

Error: Error: CRuby < 2.6 does not support macos-arm64.
        Either use a newer Ruby version or use a macOS image running on amd64, e.g., macos-13 or macos-12.
        Note that GitHub changed the meaning of macos-latest from macos-12 (amd64) to macos-14 (arm64):
        https://github.blog/changelog/2024-04-01-macos-14-sonoma-is-generally-available-and-the-latest-macos-runner-image/

        If you are using a matrix of Ruby versions, a good solution is to run only < 2.6 on amd64, like so:
        matrix:
          ruby: ['2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3']
          os: [ ubuntu-latest, macos-latest ]
          # CRuby < 2.6 does not support macos-arm64, so test those on amd64 instead
          exclude:
          - { os: macos-latest, ruby: '2.4' }
          - { os: macos-latest, ruby: '2.5' }
          include:
          - { os: macos-13, ruby: '2.4' }
          - { os: macos-13, ruby: '2.5' }

        But of course you should consider dropping support for these long-EOL Rubies, which cannot even be built on recent macOS machines.

Summary by CodeRabbit

• Chores
  • Updated testing workflows to run on multiple macOS and Ruby version combinations for better compatibility and coverage.

[coderabbitai[bot]]

Walkthrough

The changes update the GitHub Actions workflow configuration for testing on macOS. Instead of using a fixed version of macOS (macOS-latest), the workflow now uses a matrix configuration to test multiple versions of macOS and different Ruby versions. This enhances the coverage and reliability of the tests across different environments.

Changes

File	Change Summary
.github/workflows/test-darwin-ruby.yml	Updated runs-on to use a matrix for macOS and Ruby versions.

Poem

In the realm where code does flow, A matrix blooms, let testing grow! macOS versions, Ruby too, A seamless dance, both old and new. With every change and every run, Our code stands strong, our work well done!

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