build(deps): bump libdnf from c5c30c3 to 6043874

Bumps [libdnf](https://github.com/rpm-software-management/libdnf) from `c5c30c3` to `6043874`.
- [Release notes](https://github.com/rpm-software-management/libdnf/releases)
- [Commits](rpm-software-management/libdnf@c5c30c3...6043874)

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