chore(create): Relax min Node version

packages/create/src/constants.ts

@@ -1,4 +1,4 @@
-export const REQUIRED_NODE_VERSION = '>=20.0.0';
+export const REQUIRED_NODE_VERSION = '>=18.0.0';
 export const SERVER_PORT = 3000;
 /**
  * The TypeScript version needs to pinned because minor versions often