chore(integrations/langgraph-js): use latest packages

Author: ranst91

examples/integrations/langgraph-js/agent/package.json

@@ -11,13 +11,11 @@
     "dev": "npx @langchain/langgraph-cli dev --port 8123 --no-browser"
   },
   "dependencies": {
-    "@copilotkit/sdk-js": "1.56.2",
-    "@langchain/core": "^1.0.1",
-    "@langchain/langgraph": "^1.2.8",
-    "@langchain/langgraph-checkpoint": "^1.0.0",
-    "@langchain/openai": "^1.1.3",
-    "langchain": "^1.0.0",
-    "zod": "^3.23.8"
+    "@copilotkit/sdk-js": "1.56.3",
+    "@langchain/core": "^1.1.41",
+    "@langchain/langgraph": "^1.2.9",
+    "@langchain/openai": "^1.4.4",
+    "langchain": "^1.3.4"
   },
   "devDependencies": {
     "@types/html-to-text": "^9.0.4",