**Describe the bug** Docs aren't building on PRs **To Reproduce** Steps to reproduce the behavior: 1. Go to #2353 (an example) 2. Go to docs build details **Expected behavior** Docs should build. Configuration key required in `.readthedocs.yaml` **Versions:** - ``pvlib.__version__``: 0.11.2 **Additional context** Further information in [this blog post](https://about.readthedocs.com/blog/2024/12/deprecate-config-files-without-sphinx-or-mkdocs-config/)