refactor: improve certificate icon design

[marlondecol]

Description

This pull request introduces small design adjustments to the certificate icon, aiming to make better use of the available space and enhance its shapes.

Design details

The icon’s width has been increased to fill the entire horizontal area, balancing both margins. This adjustment made it possible to enlarge the star, making it sharper and more recognizable compared to the previous version.

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[PKief]

Thanks! The alignment looks slightly better now. From my side, it looks good — though the previous icon was already quite polished and pixel perfect. @lucas-labs what do you think? :)

[lucas-labs]

@PKief I just compared them and I think this one looks a bit better. The star and the "ribbon" are a bit bigger and more noticeable at small sizes, without making the whole icon bigger.
IMO, it looks good!

[github-actions]

Merge Successful

Thanks for your contribution! 🎉

The changes will be part of the upcoming update on the Marketplace.