update for cosmology.api updates

[nstarman]

PR Checklist

• Give a detailed description of the PR above.
• Document changes in the CHANGES.rst file. See existing changelog for examples.
• Add tests, if applicable, to ensure code coverage never decreases.
• Make sure the docs are up to date, if applicable, particularly the docstrings and RST files in docs folder.
• Ensure linear history by rebasing, when requested by the maintainer.

[codecov-commenter]

Codecov Report

Merging #9 (200cd94) into main (7caacf4) will increase coverage by 16.19%.
The diff coverage is 77.41%.

@@             Coverage Diff             @@
##             main       #9       +/-   ##
===========================================
+ Coverage   63.44%   79.64%   +16.19%     
===========================================
  Files           4        4               
  Lines         145      226       +81     
===========================================
+ Hits           92      180       +88     
+ Misses         53       46        -7     

Impacted Files	Coverage Δ
src/cosmology/compat/classy/_standard.py	78.64% <76.27%> (+19.35%)	⬆️
src/cosmology/compat/classy/_core.py	80.76% <100.00%> (+9.93%)	⬆️
src/cosmology/compat/classy/constants.py	100.00% <100.00%> (ø)