python3-docutils: upgrade 0.18.1 -> 0.19

python3-docutils: upgrade 0.18.1 -> 0.19

License-Update:
 year updated to 2022
 URLs of documentation and repositories changed
 URLs of license text changed
 List of files covered by the BSD 2-Clause License changed

Changelog:
===========
- Drop support for Python 2.7, 3.5, and 3.6.

- Output changes:
  HTML5:
     Wrap groups of footnotes in an <aside> for easier styling.
     The CSS rule .footnote-list { display: contents; } can be used to restore
     the behaviour of custom CSS styles.
- After package installation, the CLI commands python -m docutils and docutils
  start the generic command line front end tool.
- Support parsing "Markdown" input with 3rd party parsers myst, pycmark, or recommonmark.
- The default values for the "pep-references", "rfc-base-url", and "python-home"
  configuration settings now use the "https:" scheme. The PEP-writer template's
  header is updated to fix links and resemble the header of official PEPs.
- Various bugfixes and improvements (see HISTORY).

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>