chore(deps-dev): bump esmocha from 3.0.0 to 4.0.0

Bumps [esmocha](https://github.com/mshima/esmocha) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/mshima/esmocha/releases)
- [Commits](mshima/esmocha@v3.0.0...v4.0.0)

---
updated-dependencies:
- dependency-name: esmocha
  dependency-version: 4.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]