[BUMP] Update dependency @1024pix/stylelint-config to ^5.1.21 (admin)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@1024pix/stylelint-config	^5.1.20 -> ^5.1.21

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Release Notes

1024pix/stylelint-config (@​1024pix/stylelint-config)

### [`v5.1.21`](https://redirect.github.com/1024pix/stylelint-config/blob/HEAD/CHANGELOG.md#5121-2024-10-21) [Compare Source](https://redirect.github.com/1024pix/stylelint-config/compare/v5.1.20...v5.1.21) ##### :arrow_up: Montée de version - [#​55](https://redirect.github.com/1024pix/stylelint-config/pull/55) Lock file maintenance

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Configuration

📅 Schedule: Branch creation - "every 1 hour every weekday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Never, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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[pix-bot-github]

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