fix(@angular/cli): update engines to require node 12.20.0

BREAKING CHANGE:

We drop support for Node.js versions prior to `12.20`.

lib/packages.ts

@@ -85,7 +85,7 @@ function loadPackageJson(p: string) {
       // Overwrite engines to a common default.
       case 'engines':
         pkg['engines'] = {
-          'node': '^12.14.1 || >=14.0.0',
+          'node': '^12.20.0 || >=14.0.0',
           'npm': '^6.11.0 || ^7.5.6',
           'yarn': '>= 1.13.0',
         };

package.json

@@ -40,7 +40,7 @@
     "url": "https://github.com/angular/angular-cli.git"
   },
   "engines": {
-    "node": "^12.14.1 || ^14.0.0",
+    "node": "^12.20.0 || ^14.0.0",
     "yarn": ">=1.21.1 <2",
     "npm": "Please use yarn instead of NPM to install dependencies"
   },

packages/angular/cli/bin/ng

@@ -29,7 +29,7 @@ if (version[0] % 2 === 1 && version[0] > 14) {
 } else if (
   version[0] < 12 ||
   version[0] === 13 ||
-  (version[0] === 12 && version[1] < 14) ||
+  (version[0] === 12 && version[1] < 20) ||
   (version[0] === 14 && version[1] < 15)
 ) {
   // Error and exit if less than 12.14 or 13.x or less than 14.15