package.json: Explicitly depend on stylelint-config-recommended-scss

The latest version 14.1.0 does not work with our other stylelint package
versions. Pin down the version we've used so far, and let dependabot
take care of grouped updates.

package.json

@@ -41,6 +41,7 @@
     "sass": "1.77.6",
     "sizzle": "2.3.10",
     "stylelint": "16.6.1",
+    "stylelint-config-recommended-scss": "14.0.0",
     "stylelint-config-standard": "36.0.1",
     "stylelint-config-standard-scss": "13.1.0",
     "stylelint-formatter-pretty": "4.0.0",