build(deps): bump zeroize from 1.5.3 to 1.5.4 (#454)

Bumps [zeroize](https://github.com/RustCrypto/utils) from 1.5.3 to 1.5.4.
- [Release notes](https://github.com/RustCrypto/utils/releases)
- [Commits](RustCrypto/utils@zeroize-v1.5.3...zeroize-v1.5.4)

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

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