chore(deps): update dependency @langchain/langgraph to v1

Author: renovate[bot]

templates/js-langgraph-agent/package.json

@@ -9,7 +9,7 @@
     "dependencies": {
         "@langchain/community": "^0.3.31",
         "@langchain/core": "^0.3.40",
-        "@langchain/langgraph": "^0.3.0",
+        "@langchain/langgraph": "^1.0.0",
         "@langchain/openai": "^0.6.0",
         "apify": "^3.5.2",
         "langchain": "^0.3.18",