The latest setuptools emits a deprecation warning for pkg_resources.

This makes pytest's TestInvocationVariants.test_cmdline_python_namespace_package to fail with:

E       Failed: nomatch: 'test_hello.py::test_hello*PASSED*'
E           and: '============================= test session starts =============================='
E           and: 'platform linux -- Python 3.11.3, pytest-7.3.1, pluggy-1.0.0 -- /usr/bin/python3'
E           and: 'cachedir: .pytest_cache'
E           and: 'rootdir: /tmp/pytest-of-mockbuild/pytest-1/popen-gw8/test_cmdline_python_namespace_package0/world'
E           and: 'collecting ... collected 4 items'
E           and: ''
E       fnmatch: 'test_hello.py::test_hello*PASSED*'
E          with: 'test_hello.py::test_hello PASSED                                         [ 25%]'
E       fnmatch: 'test_hello.py::test_other*PASSED*'
E          with: 'test_hello.py::test_other PASSED                                         [ 50%]'
E       fnmatch: 'ns_pkg/world/test_world.py::test_world*PASSED*'
E          with: 'ns_pkg/world/test_world.py::test_world PASSED                            [ 75%]'
E       fnmatch: 'ns_pkg/world/test_world.py::test_other*PASSED*'
E          with: 'ns_pkg/world/test_world.py::test_other PASSED                            [100%]'
E       nomatch: '*4 passed in*'
E           and: ''
E           and: '=============================== warnings summary ==============================='
E           and: '../../../../../../usr/lib/python3.11/site-packages/pkg_resources/__init__.py:121'
E           and: '  /usr/lib/python3.11/site-packages/pkg_resources/__init__.py:121: DeprecationWarning: pkg_resources is deprecated as an API'
E           and: '    warnings.warn("pkg_resources is deprecated as an API", DeprecationWarning)'
E           and: ''
E           and: '-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html'
E           and: '========================= 4 passed, 1 warning in 0.11s ========================='
E       remains unmatched: '*4 passed in*'

/builddir/build/BUILD/pytest-7.3.1/testing/acceptance_test.py:705: Failed

Reproducible: Always

Steps to Reproduce:
Build the package in rawhide