Bump execa from 1.0.0 to 2.0.3
Bumps [execa](https://github.com/sindresorhus/execa) from 1.0.0 to 2.0.3.
- [Release notes](https://github.com/sindresorhus/execa/releases)
- [Commits](https://github.com/sindresorhus/execa/compare/v1.0.0...v2.0.3)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>