chore(deps): bump enr from 0.7.0 to 0.8.0 (#2255)

Bumps [enr](https://github.com/sigp/enr) from 0.7.0 to 0.8.0.
- [Release notes](https://github.com/sigp/enr/releases)
- [Commits](sigp/enr@v0.7.0...v0.8.0)

---
updated-dependencies:
- dependency-name: enr
  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>

Author: dependabot[bot]