build(deps-dev): bump @semantic-release/exec from 5.0.0 to 6.0.3 (#345)

Bumps [@semantic-release/exec](https://github.com/semantic-release/exec) from 5.0.0 to 6.0.3.
- [Release notes](https://github.com/semantic-release/exec/releases)
- [Commits](semantic-release/exec@v5.0.0...v6.0.3)

---
updated-dependencies:
- dependency-name: "@semantic-release/exec"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]