fix(deps): update dependency @langchain/aws to v0.1.15

Author: renovate[bot]

plugins/genai/agent-langgraph/package.json

@@ -31,7 +31,7 @@
     "@backstage/backend-plugin-api": "^1.4.3",
     "@backstage/catalog-model": "^1.7.5",
     "@backstage/config": "^1.3.3",
-    "@langchain/aws": "0.1.10",
+    "@langchain/aws": "0.1.15",
     "@langchain/core": "0.3.57",
     "@langchain/langgraph": "0.2.74",
     "@langchain/langgraph-checkpoint-postgres": "^0.0.5",