chore(package): update danger to version 3.6.6

Closes #2565

Author: greenkeeper[bot]

package.json

@@ -136,7 +136,7 @@
     "babel-plugin-transform-remove-console": "6.9.1",
     "babel-preset-react-native": "4.0.0",
     "bugsnag-sourcemaps": "1.0.3",
-    "danger": "3.6.4",
+    "danger": "3.6.6",
     "danger-plugin-yarn": "1.3.0",
     "directory-tree": "2.1.0",
     "eslint": "4.19.1",