Auto merge of #97772 - GuillaumeGomez:minifier-update, r=notriddle

Update minifier version to 0.2.1

This change and these changes come from an idea of `@camelid:` instead of creating a string, we just `write` the type into the file directly.

I don't think it'll have a big impact on perf but it's still a potential small improvement.

r? `@notriddle`

Author: bors