docs: Update Node badge in README (parse-community#8311)

Author: mtrezza

README.md

@@ -9,7 +9,7 @@
 [![Coverage](https://img.shields.io/codecov/c/github/parse-community/parse-server/alpha.svg)](https://codecov.io/github/parse-community/parse-server?branch=alpha)
 [![auto-release](https://img.shields.io/badge/%F0%9F%9A%80-auto--release-9e34eb.svg)](https://github.com/parse-community/parse-dashboard/releases)
 
-[![Node Version](https://img.shields.io/badge/nodejs-12,_14,_16,_17,_18-green.svg?logo=node.js&style=flat)](https://nodejs.org)
+[![Node Version](https://img.shields.io/badge/nodejs-14,_16,_18-green.svg?logo=node.js&style=flat)](https://nodejs.org)
 [![MongoDB Version](https://img.shields.io/badge/mongodb-4.0,_4.2,_4.4,_5,_6-green.svg?logo=mongodb&style=flat)](https://www.mongodb.com)
 [![Postgres Version](https://img.shields.io/badge/postgresql-11,_12,_13,_14,_15-green.svg?logo=postgresql&style=flat)](https://www.postgresql.org)