fix(package): update read-pkg-up to version 3.0.0

Author: greenkeeper[bot]

package.json

@@ -24,7 +24,7 @@
     "asset-pipe-common": "1.0.0-beta.6",
     "postcss": "^6.0.13",
     "postcss-import": "^11.0.0",
-    "read-pkg-up": "^2.0.0"
+    "read-pkg-up": "^3.0.0"
   },
   "devDependencies": {
     "commitizen": "^2.9.6",