chore(deps): update dependency @langchain/core to v0.3.40 (#2355)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

apps/core/package.json

@@ -137,7 +137,7 @@
     "zx-cjs": "7.0.7-0"
   },
   "devDependencies": {
-    "@langchain/core": "0.3.39",
+    "@langchain/core": "0.3.40",
     "@nestjs/cli": "11.0.2",
     "@nestjs/schematics": "11.0.0",
     "@nestjs/testing": "11.0.9",