build(deps): bump config from 0.13.3 to 0.13.4

Bumps [config](https://github.com/mehcode/config-rs) from 0.13.3 to 0.13.4.
- [Changelog](https://github.com/mehcode/config-rs/blob/v0.13.4/CHANGELOG.md)
- [Commits](rust-cli/config-rs@0.13.3...v0.13.4)

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

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