Update dependency cssnano to v6.1.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cssnano	6.0.3 -> 6.1.0

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Release Notes

cssnano/cssnano (cssnano)

v6.1.0: v6.1.0

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This release contains a lot of fixes to Browserslist support thanks to @​colinrotherham

Features

• support Browserslist options in more plugins
• support overriding autoprefixer options

Additionally, this release includes improved TypeScript types.

v6.0.5: v6.0.5

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Bug Fixes

• correctly minify font declaration in edge cases
• preserve initial property in -webkit-line-clamp

v6.0.4: v6.0.4

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Bug Fixes

• preserve empty @layer declarations
• avoid crashing when encountering @layer without any braces afterwards
• update to latest lilconfig dependency to avoid vulnerability

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Configuration

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