test_enum_class fails with Python 3.10-beta4

[befeleme]

Describe the bug

The Enum behavior was changed in Python 3.10-beta 4 to be the same as in Python 3.9. The changes to behavior are postponed to Python 3.11. When changes to Enum were reverted, the test started to fail.
Changing the condition to if sys.version_info < (3, 11) seems to solve the problem.

_______________________________ test_enum_class ________________________________
app = <SphinxTestApp buildername='html'>
    @pytest.mark.sphinx('html', testroot='ext-autodoc')
    def test_enum_class(app):
        options = {"members": None}
        actual = do_autodoc(app, 'class', 'target.enums.EnumCls', options)
    
        if sys.version_info < (3, 10):
            sig = '(value)'
        else:
            sig = ('(value, names=None, *, module=None, qualname=None, type=None, start=1, '
                   'boundary=None)')
    
>       assert list(actual) == [
            '',
            '.. py:class:: EnumCls%s' % sig,
            '   :module: target.enums',
            '',
            '   this is enum class',
            '',
            '',
            '   .. py:method:: EnumCls.say_goodbye()',
            '      :module: target.enums',
            '      :classmethod:',
            '',
            '      a classmethod says good-bye to you.',
            '',
            '',
            '   .. py:method:: EnumCls.say_hello()',
            '      :module: target.enums',
            '',
            '      a method says hello to you.',
            '',
            '',
            '   .. py:attribute:: EnumCls.val1',
            '      :module: target.enums',
            '      :value: 12',
            '',
            '      doc for val1',
            '',
            '',
            '   .. py:attribute:: EnumCls.val2',
            '      :module: target.enums',
            '      :value: 23',
            '',
            '      doc for val2',
            '',
            '',
            '   .. py:attribute:: EnumCls.val3',
            '      :module: target.enums',
            '      :value: 34',
            '',
            '      doc for val3',
            '',
        ]
E       AssertionError: assert ['', '.. py:c...ass', '', ...] == ['', '.. py:c...ass', '', ...]
E         At index 1 diff: '.. py:class:: EnumCls(value)' != '.. py:class:: EnumCls(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)'
E         Use -v to get the full diff
tests/test_ext_autodoc.py:1380: AssertionError

How to Reproduce

pytest tests/test_ext_autodoc.py

Expected behavior

The test shall pass.

Your project

RPM package in Fedora

Screenshots

No response

OS

Fedora Rawhide (35)

Python version

3.10-beta4

Sphinx version

4.1.0

Sphinx extensions

No response

Extra tools

No response

Additional context

No response