chore(package): update fs-extra to version 9.0.0

Author: greenkeeper[bot]

package.json

@@ -30,7 +30,7 @@
     "clear-module": "^4.0.0",
     "codecov": "^3.0.0",
     "file-url": "^3.0.0",
-    "fs-extra": "^8.0.0",
+    "fs-extra": "^9.0.0",
     "get-stream": "^5.0.0",
     "git-log-parser": "^1.2.0",
     "nyc": "^15.0.0",