chore: update now.json config

Author: nhsz

now.json

@@ -14,6 +14,8 @@
     }
   ],
   "env": {
+    "SMTP_HOST": "@smtp_host",
+    "SMTP_PORT": "@smtp_port",
     "EMAIL_USER": "@email_user",
     "EMAIL_PASS": "@email_pass"
   }