deps: bump multiformats from 11.0.0 to 12.1.2

Bumps [multiformats](https://github.com/multiformats/js-multiformats) from 11.0.0 to 12.1.2.
- [Release notes](https://github.com/multiformats/js-multiformats/releases)
- [Changelog](https://github.com/multiformats/js-multiformats/blob/master/CHANGELOG.md)
- [Commits](multiformats/js-multiformats@v11.0.0...v12.1.2)

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

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