fix(deps): update dependency @langchain/core to ^0.3.0 [security]

Author: renovate[bot]

bun.lockb

@@ -38,7 +38,7 @@
   "dependencies": {
     "@discord-nestjs/core": "^5.3.14",
     "@langchain/community": "^0.2.23",
-    "@langchain/core": "^0.2.20",
+    "@langchain/core": "^0.3.0",
     "@langchain/openai": "^0.2.5",
     "@nestjs/common": "^10.3.10",
     "@nestjs/config": "^3.2.3",