Fix Dep Guard

Author: gsvd

routers/web/user/setting/applications.go

@@ -5,9 +5,10 @@
 package setting
 
 import (
-	"encoding/json"
 	"net/http"
 
+	"code.gitea.io/gitea/modules/json"
+
 	auth_model "code.gitea.io/gitea/models/auth"
 	"code.gitea.io/gitea/models/db"
 	user_model "code.gitea.io/gitea/models/user"