Update dependency keyv to v5

Author: renovate[bot]

package.json

@@ -195,7 +195,7 @@
     "jose": "^5.10.0",
     "js-sha256": "^0.11.0",
     "jsonl-parse-stringify": "^1.0.3",
-    "keyv": "^4.5.4",
+    "keyv": "^5.0.0",
     "langchain": "^0.3.26",
     "langfuse": "^3.37.2",
     "langfuse-core": "^3.37.2",