Describe the bug

As reported by @astrofrog at astropy/astropy-integration-testing#13

Would be nice if we can figure it out why before astropy v6.0rc2 comes out. Or if you rather do your own testing, maybe we can remove sunpy from https://github.com/astropy/astropy-integration-testing setup? If you test yourselves, please update https://github.com/astropy/astropy/wiki/v6.0-RC-Testing accordingly. Thanks!

To Reproduce

See log at https://github.com/astropy/astropy-integration-testing/actions/runs/6830456558/job/18578429528

Screenshots

N/A

System Details

See log above.

Installation method

pip