Description of problem:
Package python-sphinx-theme-builder fails to build from source in Fedora Rawhide and Fedora 43.

Due to reasons described in https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/XO5QGOXBWHFG7AOGDQBG23AQDS2MDTWI/ a rebuild of python-sphinx-theme-builder is needed in Fedora Rawhide (44) and Fedora 43.


Version-Release number of selected component (if applicable):
0.2.0-0.21.b2.fc43

Steps to Reproduce:
fedpkg build

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/python-sphinx-theme-builder

==================================== ERRORS ====================================
_______ ERROR at setup of TestCompileCommand.test_calls_generate_assets ________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
_ ERROR at setup of TestCompileCommand.test_calls_generate_assets_in_production _
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
______ ERROR at setup of TestNewCommand.test_aborts_when_setup_py_exists _______
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
___ ERROR at setup of TestNewCommand.test_aborts_when_pyproject_toml_exists ____
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
___________ ERROR at setup of TestNewCommand.test_calls_cookiecutter ___________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
__________ ERROR at setup of TestNewCommand.test_cookiecutter_failure __________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
____________ ERROR at setup of TestPackageCommand.test_calls_build _____________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
_______________ ERROR at setup of TestCLIRoot.test_no_arguments ________________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
___________________ ERROR at setup of TestCLIRoot.test_help ____________________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
_____ ERROR at setup of TestCLIRoot.test_no_arguments_behaves_same_as_help _____
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
________________ ERROR at setup of TestCLINew.test_no_arguments ________________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
____________________ ERROR at setup of TestCLINew.test_help ____________________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
_____ ERROR at setup of TestCLINew.test_no_arguments_behaves_same_as_help ______
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
________________ ERROR at setup of TestPackageCommand.test_help ________________
    @pytest.fixture
    def runner() -> CliRunner:
>       return CliRunner(mix_stderr=False)
E       TypeError: CliRunner.__init__() got an unexpected keyword argument 'mix_stderr'
tests/conftest.py:20: TypeError
=========================== short test summary info ============================
ERROR tests/integration/test_cli_compile.py::TestCompileCommand::test_calls_generate_assets
ERROR tests/integration/test_cli_compile.py::TestCompileCommand::test_calls_generate_assets_in_production
ERROR tests/integration/test_cli_new.py::TestNewCommand::test_aborts_when_setup_py_exists
ERROR tests/integration/test_cli_new.py::TestNewCommand::test_aborts_when_pyproject_toml_exists
ERROR tests/integration/test_cli_new.py::TestNewCommand::test_calls_cookiecutter
ERROR tests/integration/test_cli_new.py::TestNewCommand::test_cookiecutter_failure
ERROR tests/integration/test_cli_package.py::TestPackageCommand::test_calls_build
ERROR tests/workflow/test_cli.py::TestCLIRoot::test_no_arguments - TypeError:...
ERROR tests/workflow/test_cli.py::TestCLIRoot::test_help - TypeError: CliRunn...
ERROR tests/workflow/test_cli.py::TestCLIRoot::test_no_arguments_behaves_same_as_help
ERROR tests/workflow/test_new.py::TestCLINew::test_no_arguments - TypeError: ...
ERROR tests/workflow/test_new.py::TestCLINew::test_help - TypeError: CliRunne...
ERROR tests/workflow/test_new.py::TestCLINew::test_no_arguments_behaves_same_as_help
ERROR tests/workflow/test_package.py::TestPackageCommand::test_help - TypeErr...
======================== 38 passed, 14 errors in 0.36s =========================

This seems like a python-click 8.2+ problem.