Bump hex from 0.4.2 to 0.4.3 (#727)

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](KokaKiwi/rust-hex@v0.4.2...v0.4.3)

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