fix: 修改gojs版本

package.json

@@ -100,7 +100,7 @@
     "cross-env": "5.0.0",
     "express": "4.16.4",
     "fontfaceobserver": "2.1.0",
-    "gojs": "^2.1.49",
+    "gojs": "2.1.49",
     "history": "4.9.0",
     "hoist-non-react-statics": "3.3.0",
     "immer": "3.0.0",