Critical security issue in execa dependency

[fehwalker]

Current version of commit-info package has a dependency of execa 1.x, which has a critical security vulnerability (CVSS score 9.8) as reported via Gitlab Security Advisories.

Advisory: https://advisories.gitlab.com/pkg/npm/execa/GMS-2020-2/

Recommendation is to upgrade to execa version 2.0.0 or higher.