deps: bump @libp2p/crypto from 3.0.4 to 4.0.0 (ipfs#304)

Bumps [@libp2p/crypto](https://github.com/libp2p/js-libp2p) from 3.0.4 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@perf-v3.0.4...utils-v4.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -166,7 +166,7 @@
     "docs:no-publish": "NODE_OPTIONS=--max_old_space_size=8192 aegir docs --publish false"
   },
   "dependencies": {
-    "@libp2p/crypto": "^3.0.3",
+    "@libp2p/crypto": "^4.0.0",
     "@libp2p/interface": "^1.1.0",
     "@libp2p/logger": "^4.0.3",
     "@libp2p/peer-id": "^4.0.3",