chore(deps): bump cxx from 1.0.79 to 1.0.80

Bumps [cxx](https://github.com/dtolnay/cxx) from 1.0.79 to 1.0.80.
- [Release notes](https://github.com/dtolnay/cxx/releases)
- [Commits](dtolnay/cxx@1.0.79...1.0.80)

---
updated-dependencies:
- dependency-name: cxx
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>