chore!: bump the minimum Node.js version requirement as a precaution

As more and more packages are switching to pure ESM, some of the
ESM-related features are only supported in Node.js 12.20 or higher,
e.g. [subpath patterns](https://nodejs.org/api/packages.html#subpath-patterns).

So we need to bump the minimum version requirement to avoid confusions.

Author: haoqunjiang

package.json

@@ -11,7 +11,7 @@
     "template"
   ],
   "engines": {
-    "node": "^12.13.0 || ^14.0.0 || >= 16.0.0"
+    "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
   },
   "scripts": {
     "prepare": "husky install",