Pushing test262 on release fails

https://github.com/boa-dev/boa/blob/main/.github/workflows/test262_release.yml#L56 is trying to `git add test262/results`, but we changed it to `test262/refs` (see https://github.com/boa-dev/data/tree/main/test262)

We may be able to just run `git add test262`