fix(deps): update dependency @langchain/core to v0.3.80 [security]

Author: renovate[bot]

frontend/apps/app/package.json

@@ -9,7 +9,7 @@
     "@codemirror/state": "6.5.2",
     "@codemirror/view": "6.38.6",
     "@electric-sql/pglite": "0.3.12",
-    "@langchain/core": "0.3.78",
+    "@langchain/core": "0.3.80",
     "@lezer/highlight": "1.2.2",
     "@liam-hq/agent": "workspace:*",
     "@liam-hq/db": "workspace:*",

frontend/internal-packages/agent/package.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "@langchain/community": "0.3.57",
-    "@langchain/core": "0.3.78",
+    "@langchain/core": "0.3.80",
     "@langchain/langgraph": "0.4.9",
     "@langchain/langgraph-checkpoint": "0.1.1",
     "@langchain/openai": "0.6.9",