pytest-8.0.0 breaks cython doctesting using this module

[radhermit]

Describe the bug
Running cython-based doctests using this module with the latest pytest release (8.0.0) fails.

See the following for the relevant error messages that are output when running a project's test suite under tox:

.tox/coverage/lib/python3.12/site-packages/pytest_cython/plugin.py:159: in collect
    optionflags = get_optionflags(self)
.tox/coverage/lib/python3.12/site-packages/_pytest/doctest.py:404: in get_optionflags
    optionflags_str = config.getini("doctest_optionflags")
E   AttributeError: 'DoctestModule' object has no attribute 'getini'

Installed Packages
The following Python and installed packages versions being used:

• Python: 3.11.7
• Cython: 3.0.8
• Pytest: 8.0.0
• Pytest-cython: 0.2.1

Expected behavior
The tests should run as expected.

[lpsinger]

Another thing that broke with pytest 8.x: the path argument was removed from the pytest_collect_file hook (see pytest-dev/pytest#11757). This causes the following error message:

pluggy._manager.PluginValidationError: Plugin 'pytest_cython' for hook 'pytest_collect_file'
hookimpl definition: pytest_collect_file(path, parent)
Argument(s) {'path'} are declared in the hookimpl but can not be found in the hookspec

See also healpy/healpy#912.