fix(deps): update dependency eslint-plugin-flowtype to ^3.6.0 (#101)

Author: renovate[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "@typescript-eslint/eslint-plugin": "^1.6.0",
     "babel-eslint": "^9.0.0",
     "eslint-config-prettier": "^4.1.0",
-    "eslint-plugin-flowtype": "^3.4.2",
+    "eslint-plugin-flowtype": "^3.6.0",
     "eslint-plugin-import": "^2.16.0",
     "eslint-plugin-jsx-a11y": "6.2.1",
     "eslint-plugin-node": "^8.0.1",