chore(deps): update dependency lightningcss to v1.21.7

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
lightningcss	1.21.6 -> 1.21.7

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Release Notes

parcel-bundler/lightningcss (lightningcss)

### [`v1.21.7`](https://togithub.com/parcel-bundler/lightningcss/compare/v1.21.6...393013928888d47ec7684d52ed79f758d371bd7b) [Compare Source](https://togithub.com/parcel-bundler/lightningcss/compare/v1.21.6...393013928888d47ec7684d52ed79f758d371bd7b)

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Configuration

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[github-actions[bot]]

size-limit report 📦

Path	Size
css	24.33 KB (0%)
background	218.34 KB (0%)
ui	430.64 KB (0%)
contentscript	5.2 KB (0%)