deps: bump multiformats from 11.0.2 to 12.1.0

Bumps [multiformats](https://github.com/multiformats/js-multiformats) from 11.0.2 to 12.1.0.
- [Release notes](https://github.com/multiformats/js-multiformats/releases)
- [Changelog](https://github.com/multiformats/js-multiformats/blob/master/CHANGELOG.md)
- [Commits](multiformats/js-multiformats@v11.0.2...v12.1.0)

---
updated-dependencies:
- dependency-name: multiformats
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -200,7 +200,7 @@
  "dependencies": {
  "@ipld/dag-cbor": "^9.0.0",
  "cborg": "^2.0.5",
- "multiformats": "^11.0.0",
+ "multiformats": "^12.1.0",
  "varint": "^6.0.0"
  },
  "devDependencies": {