[2.4.1] test_less_strict_verify_option tests for the wrong warning

[olebole]

With the new pytest (and new Astropy), we seem to get an AstropyUserWarning instead of a VerifyWarning with invalid keywords on Debian:

____________ TestImageFileCollection.test_less_strict_verify_option ____________

self = <ccdproc.tests.test_image_collection.TestImageFileCollection object at 0x7f68946d58d0>
triage_setup = <ccdproc.tests.pytest_fixtures.triage_setup.<locals>.Result object at 0x7f689477b490>

    def test_less_strict_verify_option(self, triage_setup):
        # Tests for feature request
        #
        #    https://github.com/astropy/ccdproc/issues/607
        #
        # which would allow reading of otherwise invalid FITS headers.
    
        bad_header = """
            NAXIS1  =                   10 / length of data axis 1
            NAXIS2  =                   10 / length of data axis 2
            TESTVERI= '2017/02/13-16:51:38 / Test VerifyWarning
        """
    
>       with pytest.warns(VerifyWarning):
E       astropy.utils.exceptions.AstropyUserWarning: The following header keyword is invalid or follows an unrecognized non-standard convention:
E       17/02/13-16:51:38 / Test VerifyWarning

/<<PKGBUILDDIR>>/.pybuild/cpython3_3.11_ccdproc/build/ccdproc/tests/test_image_collection.py:968: AstropyUserWarning

This happens on both Python 3.11 and Python 3.12.

• pytest-8.0.2
• astropy 6.0.0

Full build log