chore(workflow): update changelog generator to include refactor label

[chenjiahan]

Summary

Introduces a new release label for refactoring changes and updates the configuration files to support it.

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

[netlify]

✅ Deploy Preview for rspack canceled.

Name	Link
🔨 Latest commit	4bfd635
🔍 Latest deploy log	https://app.netlify.com/projects/rspack/deploys/684af12a2b301a00089850de

[codspeed-hq]

CodSpeed Performance Report

Merging #10656 will not alter performance

_{Comparing refactor_label_0612 (4bfd635) with main (3c8b4b8)}

🎉 Hooray! codspeed-node just leveled up to 4.0.1!

A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳!
Curious about what's new? Visit our releases page to delve into all the awesome details about this new version.

Summary

✅ 12 untouched benchmarks