Don't make it impossible to use the build of the package unsuported node versions

Author: bidoubiwa

CONTRIBUTING.md

@@ -30,7 +30,7 @@ First of all, thank you for contributing to MeiliSearch! The goal of this docume
 
 To run this project, you will need:
 
-- Node.js >= v12 (use [nvm](https://github.com/creationix/nvm#install-script)) if you need to change your node version)
+- Node.js >= v12 and node < 15
 - Yarn
 
 ### Install <!-- omit in TOC -->

package.json

@@ -23,9 +23,6 @@
     "test": "./scripts/test",
     "test:watch": "./scripts/test-watch"
   },
-  "engines": {
-    "node": ">=12 <15"
-  },
   "files": [
     "dist/"
   ],