build(deps): bump redhat-plumbers-in-action/differential-shellcheck

build(deps): bump redhat-plumbers-in-action/differential-shellcheck

Bumps [redhat-plumbers-in-action/differential-shellcheck](https://github.com/redhat-plumbers-in-action/differential-shellcheck) from 5.1.2 to 5.3.0.
- [Release notes](https://github.com/redhat-plumbers-in-action/differential-shellcheck/releases)
- [Changelog](https://github.com/redhat-plumbers-in-action/differential-shellcheck/blob/main/docs/CHANGELOG.md)
- [Commits](https://github.com/redhat-plumbers-in-action/differential-shellcheck/compare/52bab0caa5249d6acd8bcd5bc7a68e69ac9319f9...60c9f2b924a9c5a2ddbb25e7b23e8e11b56faab9)

---
updated-dependencies:
- dependency-name: redhat-plumbers-in-action/differential-shellcheck
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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