Pin solara to <1.29 for now due to issue with patched rcParams

[astrofrog]

We have to pin solara due to issue in widgetti/solara#606

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.60%. Comparing base (8886a79) to head (b46e487).
Report is 8 commits behind head on main.

❗ Current head b46e487 differs from pull request most recent head 3524d5b. Consider uploading reports for the commit 3524d5b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #425      +/-   ##
==========================================
- Coverage   86.61%   86.60%   -0.01%     
==========================================
  Files          89       89              
  Lines        5169     5167       -2     
==========================================
- Hits         4477     4475       -2     
  Misses        692      692              

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