fix(deps): update eslint and prettier (#180)

Author: renovate[bot]

package-lock.json

@@ -43,8 +43,8 @@
     "@typescript-eslint/eslint-plugin": "^2.1.0",
     "@typescript-eslint/parser": "^2.1.0",
     "babel-eslint": "^10.0.3",
-    "eslint-config-prettier": "^6.1.0",
-    "eslint-plugin-flowtype": "^4.2.0",
+    "eslint-config-prettier": "^6.2.0",
+    "eslint-plugin-flowtype": "^4.3.0",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-jsx-a11y": "6.2.3",
     "eslint-plugin-node": "^9.2.0",