Bump libc from 0.2.170 to 0.2.171

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.170 to 0.2.171.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Changelog](https://github.com/rust-lang/libc/blob/0.2.171/CHANGELOG.md)
- [Commits](rust-lang/libc@0.2.170...0.2.171)

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

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

Author: dependabot[bot]