python3-click: Update to version 8.1.2

python3-click: Update to version 8.1.2

- Update from 8.0.3 to 8.1.2
- Update of rootfile
- Changelog
   Version 8.1.2
	-   Fix error message for readable path check that was mixed up with the
	    executable check. :pr:`2236`
	-   Restore parameter order for ``Path``, placing the ``executable``
	    parameter at the end. It is recommended to use keyword arguments
	    instead of positional arguments. :issue:`2235`
   Version 8.1.1
	-   Fix an issue with decorator typing that caused type checking to
	    report that a command was not callable. :issue:`2227`
   Version 8.1.0
	-   Drop support for Python 3.6. :pr:`2129`
	-   Remove previously deprecated code. :pr:`2130`

	    -   ``Group.resultcallback`` is renamed to ``result_callback``.
	    -   ``autocompletion`` parameter to ``Command`` is renamed to
	        ``shell_complete``.
	    -   ``get_terminal_size`` is removed, use
	        ``shutil.get_terminal_size`` instead.
	    -   ``get_os_args`` is removed, use ``sys.argv[1:]`` instead.

	-   Rely on :pep:`538` and :pep:`540` to handle selecting UTF-8 encoding
	    instead of ASCII. Click's locale encoding detection is removed.
	    :issue:`2198`
	-   Single options boolean flags with ``show_default=True`` only show
	    the default if it is ``True``. :issue:`1971`
	-   The ``command`` and ``group`` decorators can be applied with or
	    without parentheses. :issue:`1359`
	-   The ``Path`` type can check whether the target is executable.
	    :issue:`1961`
	-   ``Command.show_default`` overrides ``Context.show_default``, instead
	    of the other way around. :issue:`1963`
	-   Parameter decorators and ``@group`` handles ``cls=None`` the same as
	    not passing ``cls``. ``@option`` handles ``help=None`` the same as
	    not passing ``help``. :issue:`#1959`
	-   A flag option with ``required=True`` requires that the flag is
	    passed instead of choosing the implicit default value. :issue:`1978`
	-   Indentation in help text passed to ``Option`` and ``Command`` is
	    cleaned the same as using the ``@option`` and ``@command``
	    decorators does. A command's ``epilog`` and ``short_help`` are also
	    processed. :issue:`1985`
	-   Store unprocessed ``Command.help``, ``epilog`` and ``short_help``
	    strings. Processing is only done when formatting help text for
	    output. :issue:`2149`
	-   Allow empty str input for ``prompt()`` when
	    ``confirmation_prompt=True`` and ``default=""``. :issue:`2157`
	-   Windows glob pattern expansion doesn't fail if a value is an invalid
	    pattern. :issue:`2195`
	-   It's possible to pass a list of ``params`` to ``@command``. Any
	    params defined with decorators are appended to the passed params.
	    :issue:`2131`.
	-   ``@command`` decorator is annotated as returning the correct type if
	    a ``cls`` argument is used. :issue:`2211`
	-   A ``Group`` with ``invoke_without_command=True`` and ``chain=False``
	    will invoke its result callback with the group function's return
	    value. :issue:`2124`
	-   ``to_info_dict`` will not fail if a ``ParamType`` doesn't define a
	    ``name``. :issue:`2168`
	-   Shell completion prioritizes option values with option prefixes over
	    new options. :issue:`2040`
	-   Options that get an environment variable value using
	    ``autoenvvar_prefix`` treat an empty value as ``None``, consistent
	    with a direct ``envvar``. :issue:`2146`
   Version 8.0.4
	-   ``open_file`` recognizes ``Path("-")`` as a standard stream, the
	    same as the string ``"-"``. :issue:`2106`
	-   The ``option`` and ``argument`` decorators preserve the type
	    annotation of the decorated function. :pr:`2155`
	-   A callable default value can customize its help text by overriding
	    ``__str__`` instead of always showing ``(dynamic)``. :issue:`2099`
	-   Fix a typo in the Bash completion script that affected file and
	    directory completion. If this script was generated by a previous
	    version, it should be regenerated. :issue:`2163`
	-   Fix typing for ``echo`` and ``secho`` file argument.
	    :issue:`2174, 2185`

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>