5.2.1.0

• Update translations from weblate
• bindings: Tests for using struct attributes in Python
• bindings: Add Python attributes for structs
• docs: Fix diff link on the dnf 5.2.0.0 changes page
• docs: Add diff with API changes in dnf5-5.2.0.0
• docs: Add a page about public API changes in dnf 5.2.0.0
• system-upgrade: fix missing \n before transaction test
• system-upgrade: comment to clarify progress bar logic
• system-upgrade: drop [[maybe_unused]] from reboot() arg
• system-upgrade: fix progress bars, set transaction description
• system-upgrade: adapt to new transaction serialization format
• system-upgrade: clean up releasever logic
• system-upgrade: fix poweroff_after
• copr: the dnf5 copr enable sets CoprRepoPart.enabled = true
• Add file search result for repoquery --whatprovides
• doc: Add enviroment variables and clarify options for loading the plugins
• dnfdaemon: Fix Rpm interface introspection file