Update dependency cross-env to v5.2.1

Author: renovate-bot

package-lock.json

@@ -32,7 +32,7 @@
  "@cypress/webpack-preprocessor": "4.1.0",
  "babel-loader": "8.0.6",
  "babel-plugin-istanbul": "5.2.0",
- "cross-env": "5.2.0",
+ "cross-env": "5.2.1",
  "cypress": "3.4.1",
  "html-webpack-plugin": "3.2.0",
  "istanbul-lib-coverage": "2.0.5",