Bump @csstools/stylelint-no-at-nest-rule from 1.0.0 to 4.0.0

Bumps [@csstools/stylelint-no-at-nest-rule](https://github.com/csstools/postcss-plugins/tree/HEAD/plugins-stylelint/no-at-nest-rule) from 1.0.0 to 4.0.0.
- [Changelog](https://github.com/csstools/postcss-plugins/blob/main/plugins-stylelint/no-at-nest-rule/CHANGELOG.md)
- [Commits](https://github.com/csstools/postcss-plugins/commits/HEAD/plugins-stylelint/no-at-nest-rule)

---
updated-dependencies:
- dependency-name: "@csstools/stylelint-no-at-nest-rule"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -69,7 +69,7 @@
     "@babel/preset-env": "^7.26.0",
     "@babel/preset-typescript": "^7.26.0",
     "@csstools/postcss-global-data": "^3.0.0",
-    "@csstools/stylelint-no-at-nest-rule": "^1.0.0",
+    "@csstools/stylelint-no-at-nest-rule": "^4.0.0",
     "@fast-check/jest": "^2.0.3",
     "@ibm/plex": "^6.4.1",
     "@open-wc/testing": "^4.0.0",