Log Message:
py-genshi: updated to 0.7.7

Version 0.7.7
* Declared setuptools as the build backend
* Fixed deprecation warnings caused by escape sequences in regex pattern
  strings

Version 0.7.6
* Added support for Python 3.10 and 3.11
* Replaced assertEquals with assertEqual. assertEquals was deprecated in
  Python 3.2.
* Removed used of element.getchildren() which has been removed from the Python
  standard library elementtree in Python 3.9.
* Added support for Python 3.10 by using CodeType.replace in
  `build_code_chunk` to make code object updates more robust against changes
  in CodeType.
* Moved tests and releases workflows to GitHub Actions
* Fixed reference leak in Markup.join C implementation.
* Sort directives only by directive index. Previously they were sorted by the
  class, namespace and arguments of the directives. This was acceptable in
  Python 2, but is a bug in Python 3 since some the arguments may not be
  comparable.
* Add support for msgctxt to i18n.
* Implemented skipping of empty attributes during translation to match the
  behaviour during translation extraction (i.e. don't try to translate empty
  strings that are not extracted).
* Ported setuptools options to declarative config in setup.cfg.
* Removed used of deprecated setuptools Feature in setup.py.