deps(dev): bump @libp2p/kad-dht from 14.2.15 to 15.0.0

Bumps [@libp2p/kad-dht](https://github.com/libp2p/js-libp2p) from 14.2.15 to 15.0.0.
- [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-v14.2.15...kad-dht-v15.0.0)

---
updated-dependencies:
- dependency-name: "@libp2p/kad-dht"
  dependency-version: 15.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

packages/interop/package.json

@@ -122,7 +122,7 @@
     "@libp2p/crypto": "^5.0.1",
     "@libp2p/identify": "^3.0.1",
     "@libp2p/interface": "^2.0.1",
-    "@libp2p/kad-dht": "^14.0.1",
+    "@libp2p/kad-dht": "^15.0.0",
     "aegir": "^45.0.1",
     "fastify": "^5.0.0",
     "helia": "^5.1.0",