Bump types-six from 1.16.13 to 1.16.15

Bumps [types-six](https://github.com/python/typeshed) from 1.16.13 to 1.16.15.
- [Release notes](https://github.com/python/typeshed/releases)
- [Commits](https://github.com/python/typeshed/commits)

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

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

Author: dependabot[bot]