build: update minimum development Node.js versions

With Node.js v18 approaching End-of-Life on 2025-04-30, the minimum
supported versions for development have been updated to `^20.11.1 || ^22.11.0`.
This change does not affect published packages.

Author: clydin

.nvmrc

@@ -1 +1 @@
-18.20.5
+22.11.0

package.json

@@ -7,7 +7,7 @@
   "bugs": "https://github.com/angular/angular/issues",
   "license": "MIT",
   "engines": {
-    "node": "^18.19.1 || ^20.11.1",
+    "node": "^20.11.1 || ^22.11.0",
     "yarn": ">=1.22.4 <2",
     "npm": "Please use yarn instead of NPM to install dependencies"
   },