deps: use egg-init v3 (#7)

Co-authored-by: jilingyun <lingyun_work@163.com>

package.json

@@ -3,7 +3,7 @@
   "version": "2.0.1",
   "description": "Alias for egg-init, so you could use `npm init egg showcase`.",
   "dependencies": {
-    "egg-init": "^2"
+    "egg-init": "3"
   },
   "devDependencies": {
     "autod": "^3.0.1",
@@ -16,7 +16,7 @@
   },
   "bin": "./bin/create-egg.js",
   "engines": {
-    "node": ">=10.0.0"
+    "node": ">=16.0.0"
   },
   "scripts": {
     "autod": "autod",