chore(deps): update dependency tdewolff/minify to v2.20.21

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
tdewolff/minify	patch	v2.20.20 -> v2.20.21

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Release Notes

tdewolff/minify (tdewolff/minify)

### [`v2.20.21`](https://togithub.com/tdewolff/minify/releases/tag/v2.20.21) [Compare Source](https://togithub.com/tdewolff/minify/compare/v2.20.20...v2.20.21) - [CSS: keep source mapping URLs,](https://togithub.com/tdewolff/minify/commit/dc25ed9e803528609803bf63b08f42171e92f53a) [fixes](https://togithub.com/tdewolff/minify/commit/dc25ed9e803528609803bf63b08f42171e92f53a) [https://github.com/tdewolff/minify/issues/692](https://togithub.com/tdewolff/minify/issues/692) - [Update Python binding,](https://togithub.com/tdewolff/minify/commit/10917c44bb8d9eb1be93292f57aef82cbadf17a7) [fixes](https://togithub.com/tdewolff/minify/commit/10917c44bb8d9eb1be93292f57aef82cbadf17a7) [https://github.com/tdewolff/minify/issues/693](https://togithub.com/tdewolff/minify/issues/693) [hopefully](https://togithub.com/tdewolff/minify/commit/10917c44bb8d9eb1be93292f57aef82cbadf17a7)

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Configuration

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