deps: bump @libp2p/webrtc from 3.2.11 to 4.0.0

Bumps [@libp2p/webrtc](https://github.com/libp2p/js-libp2p) from 3.2.11 to 4.0.0.
- [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@webrtc-v3.2.11...utils-v4.0.0)

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

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

packages/helia/package.json

@@ -89,7 +89,7 @@
     "@libp2p/mdns": "^9.0.2",
     "@libp2p/mplex": "^9.0.2",
     "@libp2p/tcp": "^8.0.2",
-    "@libp2p/webrtc": "^3.1.3",
+    "@libp2p/webrtc": "^4.0.0",
     "@libp2p/websockets": "^7.0.2",
     "@libp2p/webtransport": "^3.0.3",
     "any-signal": "^4.1.1",