fix(deps): update dependency cssnano to v6.0.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cssnano	6.0.1 -> 6.0.2

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Release Notes

cssnano/cssnano (cssnano)

v6.0.2: v6.0.2

Compare Source

• fix: update cssnano peer dependency to 8.4.31 to avoid security issue
• fix: update postcss-calc to 9.0.1 to solve disappearing expressions inside two brackets
• deps(postcss-svgo): update SVGO to 3.0.5 and update doc
• chore: update css-declaration-sorter
• fix(postcss-minify-selectors): prevent mangling of timeline range names
• fix(postcss-convert-values): keep percent unit in @Property
• chore(cssnano): update lilconfig to 3.0.0

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[openedx-semantic-release-bot]

🎉 This PR is included in version 13.0.17 🎉

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