chore(deps): update dependency @babel/preset-env to v7.4.2

Author: renovate-bot

package-lock.json

@@ -31,7 +31,7 @@
   "devDependencies": {
     "@babel/core": "7.4.0",
     "@babel/plugin-proposal-class-properties": "7.4.0",
-    "@babel/preset-env": "7.4.1",
+    "@babel/preset-env": "7.4.2",
     "@babel/preset-react": "7.0.0",
     "@cypress/webpack-preprocessor": "1.1.3",
     "@types/node": "9.6.46",