fix(package): update p-reduce to version 2.0.0

Author: greenkeeper[bot]

package.json

@@ -25,7 +25,7 @@
     "globby": "^9.0.0",
     "lodash": "^4.17.4",
     "micromatch": "^3.1.4",
-    "p-reduce": "^1.0.0"
+    "p-reduce": "^2.0.0"
   },
   "devDependencies": {
     "ava": "^1.3.1",