chore: Update @langchain/core version for langchain-openai tests (newrelic#3763)

Author: amychisholm03

test/versioned/langchain-openai/package.json

@@ -17,8 +17,9 @@
       "engines": {
         "node": ">=20"
       },
+      "comment": "@langchain/openai@>=1.2.8 imports @langchain/core/errors which was not exported until @langchain/core@1.1.18",
       "dependencies": {
-        "@langchain/core": ">=1.0.0",
+        "@langchain/core": ">=1.1.18",
         "@langchain/openai": ">=1.0.0"
       },
       "files": [