chore(deps): update dependency stylelint-config-standard to v20

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
stylelint-config-standard	devDependencies	major	18.3.0 -> 20.0.0

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Release Notes

stylelint/stylelint-config-standard

### [`v20.0.0`](https://togithub.com/stylelint/stylelint-config-standard/blob/master/CHANGELOG.md#​2000) [Compare Source](https://togithub.com/stylelint/stylelint-config-standard/compare/19.0.0...20.0.0) - Added: `value-keyword-case` rule. ### [`v19.0.0`](https://togithub.com/stylelint/stylelint-config-standard/blob/master/CHANGELOG.md#​1900) [Compare Source](https://togithub.com/stylelint/stylelint-config-standard/compare/18.3.0...19.0.0) - Removed: `stylelint` < 10.1.0 from peer dependencies. `stylelint@10.1.0+` is required now. - Changed: updated to [`stylelint-config-recommended@3.0.0`](https://togithub.com/stylelint/stylelint-config-recommended/releases/tag/3.0.0).

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