fix: 升级ejs版本，修复依赖注入漏洞

Author: 142vip.cn

code/express/apps/template-demo/package-lock.json

@@ -5,7 +5,7 @@
   "dependencies": {
     "cookie-parser": "^1.4.4",
     "debug": "^2.6.9",
-    "ejs": "^2.6.1",
+    "ejs": "^3.1.9",
     "express": "^4.16.1",
     "http-errors": "^1.6.3",
     "morgan": "^1.9.1"