Log Message:
khard: update to 0.19.1.

v0.19.1: 2023-11-26

- Fix documentation builds on https://khard.readthedocs.io/

v0.19.0: 2023-11-23

- Remove support for python 3.7
- Run tests on python 3.11 and 3.12 in CI
- Fix yaml conversion of multiple addresses with same label (#323, #324)
- Improve error message for address book paths (884f1d9)
- Add pyproject.toml file and deprecate setup.py
- Remove deprecated options from --help and zsh completion
- Internal changes:
  - Add a general ask() function (#320, #326)
  - Use an exception to cancle user interactions (#325)
  - More and stricter type hints
  - Promote AddressBookCollection to a Sequence