chore(package): update flow-bin to version 0.78.0

Closes #4908

Author: greenkeeper[bot]

package.json

@@ -56,7 +56,7 @@
     "deep-diff": "1.0.1",
     "eslint": "^5.0.0",
     "eslint-plugin-flowtype": "^2.39.1",
-    "flow-bin": "^0.76.0",
+    "flow-bin": "^0.78.0",
     "gaze": "1.1.3",
     "jasmine": "3.1.0",
     "jasmine-spec-reporter": "^4.1.0",