chore(package): update cross-env to version 5.1.1 (parse-community#4299)

Author: greenkeeper[bot]

package.json

@@ -55,7 +55,7 @@
  "babel-preset-stage-3": "6.24.1",
  "babel-register": "6.26.0",
  "bcrypt-nodejs": "0.0.3",
- "cross-env": "5.1.0",
+ "cross-env": "5.1.1",
  "deep-diff": "0.3.8",
  "eslint": "^4.9.0",
  "eslint-plugin-flowtype": "^2.39.1",