Bump actions/setup-python from 4.5.0 to 4.6.0

Bump actions/setup-python from 4.5.0 to 4.6.0

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v4.5.0...v4.6.0)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20792)