Bump stylelint from 16.11.0 to 16.12.0 in the linting group (#562)

* Bump stylelint from 16.11.0 to 16.12.0 in the linting group

Bumps the linting group with 1 update: [stylelint](https://github.com/stylelint/stylelint).


Updates `stylelint` from 16.11.0 to 16.12.0
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@16.11.0...16.12.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

* Update yarn.nix

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: robbe[bot] <[email protected]>

package.json

@@ -20,7 +20,7 @@
     "@tree-company/stylelint-config": "^0.4.3",
     "eslint": "^9.17.0",
     "prettier": "^3.4.2",
-    "stylelint": "^16.11.0"
+    "stylelint": "^16.12.0"
   },
   "stylelint": {
     "extends": [