Bump stylelint-order from 5.0.0 to 6.0.0

Bumps [stylelint-order](https://github.com/hudochenkov/stylelint-order) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/hudochenkov/stylelint-order/releases)
- [Changelog](https://github.com/hudochenkov/stylelint-order/blob/master/CHANGELOG.md)
- [Commits](hudochenkov/stylelint-order@5.0.0...6.0.0)

---
updated-dependencies:
- dependency-name: stylelint-order
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -35,7 +35,7 @@
   "homepage": "https://github.com/cahamilton/stylelint-config-property-sort-order-smacss#readme",
   "dependencies": {
     "css-property-sort-order-smacss": "~2.2.0",
-    "stylelint-order": "^5.0.0"
+    "stylelint-order": "^6.0.0"
   },
   "devDependencies": {
     "coveralls": "^3.1.0",