Update package.json

package.json

@@ -9,6 +9,8 @@
   "author": "",
   "license": "MIT",
   "dependencies": {
-    "express": "^4.18.2"
+    "body-parser": "^1.19.0",
+    "express": "^4.17.1",
+    "wrtc": "^0.4.7"
   }
 }