bump minimum required node version to 20

Author: kentcdodds

README.md

@@ -56,7 +56,7 @@ speed on some of the tools and concepts we'll be covering:
 ## System Requirements
 
 - [git][git] v2.18 or greater
-- [NodeJS][node] v18 or greater
+- [NodeJS][node] v20 or greater
 - [npm][npm] v8 or greater
 
 All of these must be available in your `PATH`. To verify things are set up

package.json

@@ -54,7 +54,7 @@
     "examples/*"
   ],
   "engines": {
-    "node": ">=18",
+    "node": ">=20",
     "npm": ">=8.16.0",
     "git": ">=2.18.0"
   },