chore(deps-dev): bump esmocha from 4.0.0 to 5.0.0

Bumps [esmocha](https://github.com/mshima/esmocha) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/mshima/esmocha/releases)
- [Commits](mshima/esmocha@v4.0.0...v5.0.0)

---
updated-dependencies:
- dependency-name: esmocha
  dependency-version: 5.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]