feat: 版本号修改

package.json

@@ -1,6 +1,6 @@
 {
   "name": "teachcloud-platform-web",
-  "version": "3.4.2",
+  "version": "3.4.3",
   "scripts": {
     "start": "vue-cli-service serve",
     "serve": "vue-cli-service serve",