4.7.0

Removed

• Drop support for Python 3.9 and PyPy 3.9.

Fixed

• Reject unsafe remote filenames in the Download command.

Infrastructure

• Bump PyInstaller version and remove obsolete hidden imports from the PyInstaller spec file.
• Bump pytest and other test dependencies versions.
• Bump sdk version to v2.12.0.
• Fix tests with pytest 9.0.
• Migrate from pdm to uv.
• Rewrite the test case verifying non-UTF-8 help rendering, replacing subtests with parametrization, cover nested commands.