replace pydocstyle with ruff
AC:
- [ ] Make sure "D" is enabled in ruff.toml in all repos, try to avoid disabling "D" rules that are not disabled in cki-lib if possible
- [ ] Remove pydocstyle from cki-lib's cki_lint.sh
Jira: [CKI-7008](https://issues.redhat.com/browse/CKI-7008)
task