Upgrade flow eslint plugin

package.json

@@ -108,7 +108,7 @@
         "eslint-loader": "^2.1.2",
         "eslint-plugin-chai-friendly": "^0.4.1",
         "eslint-plugin-cypress": "^2.2.0",
-        "eslint-plugin-flowtype": "^2.50.0",
+        "eslint-plugin-flowtype": "^3.2.1",
         "eslint-plugin-import": "^2.16.0",
         "eslint-plugin-jest": "^22.2.2",
         "eslint-plugin-jsx-a11y": "^6.2.1",

yarn.lock

@@ -3980,9 +3980,10 @@ eslint-plugin-cypress@^2.2.0:
   dependencies:
     globals "^11.0.1"
 
-eslint-plugin-flowtype@^2.50.0:
-  version "2.50.0"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-flowtype/-/eslint-plugin-flowtype-2.50.0.tgz#953e262fa9b5d0fa76e178604892cf60dfb916da"
+eslint-plugin-flowtype@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-flowtype/-/eslint-plugin-flowtype-3.2.1.tgz#45e032aee54e695dfc41a891e92b7afedfc62c77"
+  integrity sha512-1lymqM8Cawxu5xsS8TaCrLWJYUmUdoG4hCfa7yWOhCf0qZn/CvI8FxqkhdOP6bAosBn5zeYxKe3Q/4rfKN8a+A==
   dependencies:
     lodash "^4.17.10"