Bump sysexits from 0.7.2 to 0.7.4 (#12)

Bumps [sysexits](https://github.com/sorairolake/sysexits-rs) from 0.7.2 to 0.7.4.
- [Changelog](https://github.com/sorairolake/sysexits-rs/blob/develop/CHANGELOG.adoc)
- [Commits](sorairolake/sysexits-rs@v0.7.2...v0.7.4)

---
updated-dependencies:
- dependency-name: sysexits
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>