chore(package): update eslint-plugin-flowtype to version 2.39.1 (#4282)

Author: flovilmart

package.json

@@ -58,7 +58,7 @@
     "cross-env": "5.1.0",
     "deep-diff": "0.3.8",
     "eslint": "^4.9.0",
-    "eslint-plugin-flowtype": "^2.25.0",
+    "eslint-plugin-flowtype": "^2.39.1",
     "gaze": "1.1.2",
     "jasmine": "2.8.0",
     "jasmine-spec-reporter": "^4.1.0",