Bump hex from 0.4.2 to 0.4.3 (#3584)

Bumps [hex](https://github.com/KokaKiwi/rust-hex) from 0.4.2 to 0.4.3.
- [Release notes](https://github.com/KokaKiwi/rust-hex/releases)
- [Commits](https://github.com/KokaKiwi/rust-hex/compare/v0.4.2...v0.4.3)

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

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