Bump typenum from 1.17.0 to 1.18.0 in /src/_bcrypt

Bumps [typenum](https://github.com/paholg/typenum) from 1.17.0 to 1.18.0.
- [Release notes](https://github.com/paholg/typenum/releases)
- [Changelog](https://github.com/paholg/typenum/blob/main/CHANGELOG.md)
- [Commits](paholg/typenum@v1.17.0...v1.18.0)

---
updated-dependencies:
- dependency-name: typenum
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]