test: unpin pytest

[aciba90]

Proposed Commit Message

test: unpin pytest

After https://github.com/pytest-dev/pytest/pull/11125 being
included in pytest==7.4, pytest can be unpinned.

Additional Context

#4184
pytest-dev/pytest#11104
pytest-dev/pytest#11125 (comment)

Test Steps

tox -re integration-tests -- --collect-only tests/integration_tests/

With pytest==7.3.2 the following traceback appeared:

ImportError while loading conftest '/home/aciba/canonical/cloud-init/tests/unittests/conftest.py'.                                                                                                                 
tests/unittests/conftest.py:11: in <module>                                                                                                                                                                        
    from tests.unittests.helpers import retarget_many_wrapper                                                                                                                                                      
tests/unittests/helpers.py:21: in <module>                                                                                                                                                                         
    import responses                                                                                                                                                                                               
E   ModuleNotFoundError: No module named 'responses'                                                                                                                                                               
ERROR: InvocationError for command '/home/aciba/canonical/cloud-init/.tox/integration-tests/bin/python -m pytest -vv --log-cli-level=INFO --durations 10 --collect-only tests/integration_tests' (exited with code 
4) 

With this change no traceback appears.

Checklist

• My code follows the process laid out in the documentation
• I have updated or added any unit tests accordingly
• I have updated or added any documentation accordingly

[TheRealFalcon]

LGTM!

[aciba90]

It looks like there is some error somewhere in our tooling that does not like pytest!=x.x.x, see python3-pytest! in:

https://github.com/canonical/cloud-init/actions/runs/6626358047/job/17999122947?pr=4545

subprocess.CalledProcessError: Command '['sudo', 'apt', 'install', '-y', 'debhelper', 'dh-python', 'procps', 'python3-configobj', 'python3-debconf', 'python3-jinja2', 'python3-jsonpatch', 'python3-jsonschema', 'python3-netifaces', 'python3-oauthlib', 'python3-passlib', 'python3-pytest!', 'python3-pytest-cov', 'python3-pytest-mock', 'python3-requests', 'python3-responses', 'python3-serial', 'python3-setuptools', 'python3-yaml']' returned non-zero exit status 100.

Marking this as draft until I fix it.

[blackboxsw]

Thanks for the followup and separate commit fixing read-dependencies which parses the requirements files.