turbo_tests2 3.2.9: Report workers that fail before producing results

🏷️ release turbo_tests2 🏷️ 3.2.9

Version 3.2.9 makes early worker failures visible as errors outside examples. It also uses JSON.generate for result rows, avoiding a crash caused by incompatible ActiveSupport to_json overrides.

Read the upstream release notes for the complete changes and see the project repository for usage and installation.