build(deps-dev): bump stylelint in /ui/mantine-ui in the styles group (#5146)

Bumps the styles group in /ui/mantine-ui with 1 update: [stylelint](https://github.com/stylelint/stylelint).


Updates `stylelint` from 17.4.0 to 17.6.0
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@17.4.0...17.6.0)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-version: 17.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: styles
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

ui/mantine-ui/package-lock.json

@@ -47,7 +47,7 @@
     "postcss-simple-vars": "^7.0.1",
     "prettier": "^3.8.1",
     "prop-types": "^15.8.1",
-    "stylelint": "^17.4.0",
+    "stylelint": "^17.6.0",
     "stylelint-config-standard-scss": "^17.0.0",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.56.1",