Merge pull request #869 from textpattern/dependabot/npm_and_yarn/stylelint-17.11.0

Bump stylelint from 17.9.1 to 17.11.0

Author: petecooper

package.json

@@ -25,7 +25,7 @@
     "grunt-terser": "2.0.0",
     "load-grunt-tasks": "5.1.0",
     "sass": "1.91.0",
-    "stylelint": "17.9.1",
+    "stylelint": "17.11.0",
     "stylelint-config-standard-scss": "16.0.0",
     "sass": "1.99.0",
     "stylelint-order": "8.1.1"