build(deps): bump cpufeatures from 0.2.5 to 0.2.6 (#358)

Bumps [cpufeatures](https://github.com/RustCrypto/utils) from 0.2.5 to 0.2.6.
- [Release notes](https://github.com/RustCrypto/utils/releases)
- [Commits](RustCrypto/utils@cpufeatures-v0.2.5...cpufeatures-v0.2.6)

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

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