chore(deps): update devdependency stylelint to ^14.8.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
stylelint (source)	^14.7.1 -> ^14.8.0

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Release Notes

stylelint/stylelint

### [`v14.8.0`](https://togithub.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#​1480) [Compare Source](https://togithub.com/stylelint/stylelint/compare/14.7.1...14.8.0) - Added: `keyframe-block-no-duplicate-selectors` rule ([#​6024](https://togithub.com/stylelint/stylelint/pull/6024)). - Added: `property-*-list` support for vendor prefixes ([#​6025](https://togithub.com/stylelint/stylelint/pull/6025)). - Fixed: `at-rule-*-list` end positions ([#​6032](https://togithub.com/stylelint/stylelint/pull/6032)). - Fixed: `at-rule-no-unknown` end positions ([#​6026](https://togithub.com/stylelint/stylelint/pull/6026)). - Fixed: `function-no-unknown` end positions ([#​6038](https://togithub.com/stylelint/stylelint/pull/6038)). - Fixed: `property-no-unknown` end positions ([#​6039](https://togithub.com/stylelint/stylelint/pull/6039)). - Fixed: `function-linear-gradient-no-nonstandard-direction` false negative about `-ms-linear-gradient` ([#​6031](https://togithub.com/stylelint/stylelint/pull/6031)).

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