deps: bump @libp2p/kad-dht from 12.1.5 to 14.0.2

Bumps [@libp2p/kad-dht](https://github.com/libp2p/js-libp2p) from 12.1.5 to 14.0.2.
- [Release notes](https://github.com/libp2p/js-libp2p/releases)
- [Changelog](https://github.com/libp2p/js-libp2p/blob/main/.release-please.json)
- [Commits](libp2p/js-libp2p@kad-dht-v12.1.5...kad-dht-v14.0.2)

---
updated-dependencies:
- dependency-name: "@libp2p/kad-dht"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/gateway-conformance/package.json

@@ -57,7 +57,7 @@
     "@helia/interface": "^4.3.0",
     "@helia/routers": "^1.1.0",
     "@helia/verified-fetch": "1.5.0",
-    "@libp2p/kad-dht": "^12.0.17",
+    "@libp2p/kad-dht": "^14.0.2",
     "@libp2p/logger": "^4.0.13",
     "@libp2p/peer-id": "^4.1.2",
     "@multiformats/dns": "^1.0.6",