Log Message:
py-html-sanitizer: updated to 2.2.0

2.2 (2023-07-03)

- Changed ``keep_normalized_whitespace`` to preserve whitespace at the tail of
  tags, not just between tags.
- Changed the parameters of ``normalize_whitespace_in_text_or_tail`` to be
  keyword-only.

2.1 (2023-06-29)

- Added a test for a type of misconfiguration.
- Changed the sanitizer configuration validation to not allow unexpected data
  types in ``tags``, ``empty``, ``separate``, ``whitespace`` and
  ``attributes``.

2.0 (2023-06-28)

- Raised the minimum Python version to 3.7. Added Python 3.10, 3.11.
- Raised the minimum lxml version to the current 4.9.1.
- Switched from Travis CI to GitHub actions. Added Python 3.9 to the CI
  matrix.
- Renamed the main branch to main.
- Switched to a declarative setup.
- Fixed a whitespace dependency in the testsuite.
- Switched to hatchling and ruff.
- Made behavior-altering arguments to ``normalize_overall_whitespace``
  keyword-only.