build(deps): bump keccak from 0.1.2 to 0.1.3 (#436)

Bumps [keccak](https://github.com/RustCrypto/sponges) from 0.1.2 to 0.1.3.
- [Release notes](https://github.com/RustCrypto/sponges/releases)
- [Commits](RustCrypto/sponges@keccak-v0.1.2...keccak-v0.1.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]