Adapt to changed keys from pvlib perez function

[kandersolar]

• [ ] Closes #xxxx
• Adds description and name entries in the appropriate "what's new" file in docs/sphinx/whatsnew for all changes. Includes link to the GitHub Issue with :issue:`num` or this Pull Request with :pull:`num`. Includes contributor name and/or GitHub username (link with :ghuser:`user`).
• Pull request is nearly complete and ready for detailed review.
• Maintainer: Appropriate GitHub Labels and Milestone are assigned to the Pull Request and linked Issue.

See pvlib/pvlib-python#2627

[wholmgren]

update https://github.com/pvlib/solarfactors/blob/main/pyproject.toml#L29 ?

[kandersolar]

The intent is to retain compatibility with the original names, so no need to bump the minimum pvlib version.

Clearly something went awry though, since the tests are failing...