setup-ruby-flash v1.1 released!

🏷️ release setup-ruby-flash 🏷️ v1.1

Uses checkout@v5 because:

• gitea is compatible with actions/checkout@v5, but not v6
• forgejo is compatible with actions/checkout@v5, but not v6

Full Changelog: https://github.com/appraisal-rb/setup-ruby-flash/commits/v1.1