Update package.json

Author: philwareham

package.json

@@ -37,10 +37,10 @@
     "grunt-postcss": "0.9.0",
     "grunt-replace-regex": "1.0.3",
     "grunt-sass": "3.1.0",
-    "grunt-stylelint": "0.15.0",
+    "grunt-stylelint": "0.16.0",
     "load-grunt-tasks": "5.1.0",
-    "sass": "1.28.0",
-    "stylelint": "13.7.2",
+    "sass": "1.29.0",
+    "stylelint": "13.8.0",
     "stylelint-order": "4.1.0",
     "stylelint-scss": "3.18.0",
     "uglify-save-license": "0.4.1"