Bump cowsay from 5.0 to 6.0 in /src/py3.9

Bumps [cowsay](https://github.com/VaasuDevanS/cowsay-python) from 5.0 to 6.0.
- [Changelog](https://github.com/VaasuDevanS/cowsay-python/blob/main/CHANGELOG.md)
- [Commits](VaasuDevanS/cowsay-python@v5.0...v6.0)

---
updated-dependencies:
- dependency-name: cowsay
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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