Bump github.com/ethereum/go-ethereum from 1.11.6 to 1.12.0 (#23)

Bumps [github.com/ethereum/go-ethereum](https://github.com/ethereum/go-ethereum) from 1.11.6 to 1.12.0.
- [Release notes](https://github.com/ethereum/go-ethereum/releases)
- [Commits](ethereum/go-ethereum@v1.11.6...v1.12.0)

---
updated-dependencies:
- dependency-name: github.com/ethereum/go-ethereum
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]