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

Closes #32

Author: greenkeeper[bot]

packages/inra-server-socket/package.json

@@ -33,7 +33,7 @@
     "babel-preset-env": "^1.7.0",
     "babel-preset-flow": "^6.23.0",
     "flow-bin": "^0.83.0",
-    "fs-extra": "^7.0.0",
+    "fs-extra": "^9.0.0",
     "glob": "^7.1.2",
     "mocha": "^5.1.1",
     "socket.io-client": "^2.1.0"