chore(package): update fs-extra to version 5.0.0

Author: greenkeeper[bot]

package.json

@@ -36,7 +36,7 @@
     "cssnano": "^3.10.0",
     "eslint-config-prettier": "^2.3.0",
     "eslint-plugin-prettier": "^2.1.2",
-    "fs-extra": "^4.0.0",
+    "fs-extra": "^5.0.0",
     "jasmine-core": "^2.7.0",
     "jasmine-jquery": "^2.1.1",
     "karma": "^1.7.0",