feat(platform-server): update supported range of node versions (#41544)

Update the supported range of node versions for Angular.  Angular now
supports node >=12.14.1 to <16.0.0, dropping support for Node v10.

PR Close #41544

packages/platform-server/package.json

@@ -4,6 +4,9 @@
   "description": "Angular - library for using Angular in Node.js",
   "author": "angular",
   "license": "MIT",
+  "engines": {
+    "node": ">=12.14.1 <16.0.0"
+  },
   "peerDependencies": {
     "@angular/animations": "0.0.0-PLACEHOLDER",
     "@angular/common": "0.0.0-PLACEHOLDER",
@@ -34,9 +37,6 @@
     "./__ivy_ngcc__/esm2015/init/src/init.js",
     "./__ivy_ngcc__/fesm2015/init.js"
   ],
-  "engines": {
-    "node": ">=8.0"
-  },
   "publishConfig":{
     "registry":"https://wombat-dressing-room.appspot.com"
   }