fix: 修复因 mongodb 一个废弃报错导致部署不成功问题

CHANGELOG.md

+## v1.9.1
+* 修复因 mongodb 一个废弃报错导致部署不成功问题
+
 ## v1.9.0
 * 修复测试集合部分情况下闪动问题
 * 修改ldap filter的匹配规则，使其可以匹配&和|操作符  Merge pull request #1631 from vvkkhjt/master

package.json

 {
   "name": "yapi-vendor",
-  "version": "1.9.0",
+  "version": "1.9.1",
   "description": "YAPI",
   "main": "server/app.js",
   "scripts": {

server/utils/db.js

@@ -19,7 +19,7 @@ function connect(callback) {
   mongoose.set('useCreateIndex', true);
 
   let config = yapi.WEBCONFIG;
-  let options = {useNewUrlParser: true, useCreateIndex: true};
+  let options = {useNewUrlParser: true, useCreateIndex: true, useUnifiedTopology: true};
 
   if (config.db.user) {
     options.user = config.db.user;