chore(deps): bump @libp2p/keychain from 5.2.9 to 6.0.1

Bumps [@libp2p/keychain](https://github.com/libp2p/js-libp2p) from 5.2.9 to 6.0.1.
- [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@webrtc-v5.2.9...utils-v6.0.1)

---
updated-dependencies:
- dependency-name: "@libp2p/keychain"
  dependency-version: 6.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

examples/js-libp2p-example-auto-tls/package.json

@@ -24,7 +24,7 @@
     "@libp2p/config": "^1.0.0",
     "@libp2p/identify": "^3.0.13",
     "@libp2p/kad-dht": "^15.0.0",
-    "@libp2p/keychain": "^5.0.11",
+    "@libp2p/keychain": "^6.0.1",
     "@libp2p/ping": "^2.0.27",
     "@libp2p/upnp-nat": "^3.0.1",
     "@libp2p/websockets": "^9.1.0",