build(deps): bump hex-literal from 0.3.1 to 0.3.2 (RustCrypto#186)

Bumps [hex-literal](https://github.com/RustCrypto/utils) from 0.3.1 to 0.3.2.
- [Release notes](https://github.com/RustCrypto/utils/releases)
- [Commits](RustCrypto/utils@hex-literal-v0.3.1...hex-literal-v0.3.2)

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

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