Bump exec-sh from 0.3.3 to 0.3.4
Bump exec-sh from 0.3.3 to 0.3.4

Bumps [exec-sh](https://github.com/tsertkov/exec-sh) from 0.3.3 to 0.3.4.
- [Release notes](https://github.com/tsertkov/exec-sh/releases)
- [Commits](https://github.com/tsertkov/exec-sh/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
devotox/ember-cli-proxy-live-reload,devotox/ember-cli-proxy-live-reload