Bump sequencer-utils from 8caa334 to 4fc7c70

Bumps [sequencer-utils](https://github.com/EspressoSystems/espresso-sequencer) from `8caa334` to `4fc7c70`.
- [Release notes](https://github.com/EspressoSystems/espresso-sequencer/releases)
- [Commits](EspressoSystems/espresso-sequencer@8caa334...4fc7c70)

---
updated-dependencies:
- dependency-name: sequencer-utils
  dependency-type: direct:production
...

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