chore(package): update coveralls to version 2.13.2

Author: greenkeeper[bot]

package.json

@@ -60,7 +60,7 @@
   "devDependencies": {
     "autoprefixer": "7.1.4",
     "ava": "0.22.0",
-    "coveralls": "2.13.1",
+    "coveralls": "2.13.2",
     "execa": "0.8.0",
     "nyc": "11.2.1",
     "text-loader": "0.0.1",