Update some vulnerable dependencies. (#12)

* Update dependencies install script.

* Remove rogue lock files.

* Update critical vulnerability affected dependency.

* Update pending deps.

* Update some remaining vulnerable deps.

* Add webpack-dev-server for e2e testing.

* Use correct script name.

* Remove now absent vanilla example.

* Use the right script name.

Author: miguelcalderon

examples/nextjs/package-lock.json

@@ -5,7 +5,7 @@
   "license": "SEE LICENSE IN https://www.nutrient.io/legal/Nutrient_SDK_User_Evaluation_Subscription_Agreement",
   "dependencies": {
     "@nutrient-sdk/viewer": "1.1.0",
-    "next": "^15.1.3",
+    "next": "^15.2.3",
     "react": "^19.0.0",
     "react-dom": "^19.0.0"
   },