fix(deps): update dependency eslint-plugin-flowtype to ^2.50.0 (#20)

Author: renovate[bot]

package-lock.json

@@ -38,7 +38,7 @@
   "dependencies": {
     "babel-eslint": "^8.2.5",
     "eslint-config-prettier": "^2.9.0",
-    "eslint-plugin-flowtype": "^2.49.3",
+    "eslint-plugin-flowtype": "^2.50.0",
     "eslint-plugin-import": "^2.13.0",
     "eslint-plugin-jsx-a11y": "6.1.0",
     "eslint-plugin-prettier": "^2.6.0",