chore: update dependency prettier to v2.1.2

Author: renovate-bot

package-lock.json

@@ -101,7 +101,7 @@
     "eslint-config-prettier": "6.11.0",
     "eslint-plugin-prettier": "3.1.4",
     "flow-bin": "0.131.0",
-    "prettier": "2.0.5",
+    "prettier": "2.1.2",
     "react-docgen": "5.3.0",
     "rimraf": "3.0.2",
     "test-all-versions": "4.1.1"