build(deps-dev): bump pyupgrade from 3.4.0 to 3.8.0

Bumps [pyupgrade](https://github.com/asottile/pyupgrade) from 3.4.0 to 3.8.0.
- [Commits](asottile/pyupgrade@v3.4.0...v3.8.0)

---
updated-dependencies:
- dependency-name: pyupgrade
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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