chore(deps): update dependency stylelint to v15.6.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
stylelint (source)	15.6.2 -> 15.6.3

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Release Notes

stylelint/stylelint

### [`v15.6.3`](https://togithub.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#​1563) [Compare Source](https://togithub.com/stylelint/stylelint/compare/15.6.2...15.6.3) - Fixed: `alpha-value-notation` false positives for `color()` ([#​6885](https://togithub.com/stylelint/stylelint/pull/6885)) ([@​romainmenke](https://togithub.com/romainmenke)). - Fixed: `alpha-value-notation` performance with improved benchmark script ([#​6864](https://togithub.com/stylelint/stylelint/pull/6864)) ([@​romainmenke](https://togithub.com/romainmenke)). - Fixed: `at-rule-property-required-list` performance ([#​6865](https://togithub.com/stylelint/stylelint/pull/6865)) ([@​romainmenke](https://togithub.com/romainmenke)). - Fixed: `color-*` performance ([#​6868](https://togithub.com/stylelint/stylelint/pull/6868)) ([@​romainmenke](https://togithub.com/romainmenke)). - Fixed: `length-zero-no-unit` false positives on new math functions ([#​6871](https://togithub.com/stylelint/stylelint/pull/6871)) ([@​romainmenke](https://togithub.com/romainmenke)). - Fixed: `string` formatter for unexpected truncation on non-ASCII characters ([#​6861](https://togithub.com/stylelint/stylelint/pull/6861)) ([@​Max10240](https://togithub.com/Max10240)). - Fixed: `unit-no-unknown` false positives for the second and subsequent `image-set()` with `x` descriptor ([#​6879](https://togithub.com/stylelint/stylelint/pull/6879)) ([@​romainmenke](https://togithub.com/romainmenke)).

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